US3753450A

US3753450A - Heddle frame

Info

Publication number: US3753450A
Application number: US00251687A
Authority: US
Inventors: B Koch
Original assignee: GRAB AND CO AG
Current assignee: GRAB AND CO AG
Priority date: 1971-05-13
Filing date: 1972-05-09
Publication date: 1973-08-21
Anticipated expiration: 1990-08-21
Also published as: JPS5514185B1; CH538560A; FR2137643A1; DE2218066C3; DE2218066A1; DE2218066B2; FR2137643B1; GB1364794A; IT958861B

Abstract

A heddle frame is provided with at least one vertical side support to the ends of which the horizontal frame staves are connected by vertical screw bolts which are in axial alignment with each other and also are disposed parallel to the vertical side support. Upon loosening the screw bolts the side support may be pivoted away from the adjacent ends of the horizontal staves to expose the ends of heddle carrying rods attached to the staves, so that the heddles may easily be slidably attached and removed from the rods.

Description

United States Patent 1 1 1 51 Aug. 21, 1973 Koch l l HEDDLE FRAME 3.335,7s9 8/1967 Koch 139/91 3.604,469 9/l97l Kloten et al. 139/91 [75 Inventor: Bernhard R. Koch, Horgenberg,

Switzerland Primary Examiner-Henry S. Jaudon l Asslgflfiel GI'Ob 81 Aktiengesellschafl, Attorney-Benjamin H. Sherman, Donald J. Simpson Horgenberg, Switzerland et 2 Fl 11: M 9 1972 [2 1 57 ABSTRACT [21] Appl 251687 A heddle frame is provided with at least one vertical side support to the ends of which the horizontal frame [30] Foreign Application Priorit D staves are connected by vertical screw bolts which are May 13 1971 Switzerland 7099 71 in axial alignment each and are disposed A I parallel to the vertical side support. Upon loosening the 52 us. c1. 139/191 Screw blts the Side suPPon may be pivoted away from 511 1111. c1. D03c 9/06 the adiacem ends hrizmal SW98 expose the [58] Field of Search 139/91 92 ends heddle carrying mds attached to the SW95, SO

that the heddles may easily be slidably attached and re- 56] References Cited moved from the rods.

UNITED STATES PATENTS 8 Claims, 7 Drawing Figures 2,897,844 8/1959 Graf 139/91 HEDDLE FRAME The present invention relates to a heddle frame, and particularly to a frame having a heddle carrying rod fastened along the entire length of each horizontal frame stave. At least one vertical side support is provided at each of its ends with a lateral plate received in recesses formed in the frame staves. Each plate of the side support and the frame staves is releasably connected each by at least one screw bolt, whereby the two screw bolts on the side support are arranged in axial alignment and also parallel to the side support and when tightened do tightly secure the side support and the staves in operative position.

Heddle frames of the type relating to the present invention are described for example in the Swiss patent 427,688. In this prior construction the side supports are connected with the frame staves by clamping parts of the side supports to complementary parts on the frame staves, whereby the side supports may be withdrawn from the frame staves after the removal of the fastening bolts arranged in the plane of the frame staves.

When employing automatic draw-in machines for the heddles it is necessary to move the side supports out of the range of the heddle carrying rods so that the heddles can be attached thereto.

The same necessity exists when the heddles are to be manually threaded onto the rods.

In accordance with the present invention these necessities are accomplished by providing at least on one side of a side support with plate members which enter each into an open recess in the ends of the staves and providing loose screw bolts so that the side support is hingedly swingable about an axis disposed parallel to the side support. This pivot axis may advantageously be the same as the axis of the screw bolts. The condition wherein the pivotal side support remains connected to the heddle frame prevents a deformation of the heddle frame; such deformation could occur in very wide heddle frames when a side support is completely removed from the heddle frame.

In a preferred form of the invention in which a single bolt serves to connect one end of a side support with an adjacent end of a frame stave, it is not necessary to remove the screw bolt and the latter cannot get lost. Still the heddles can quickly and securely be attached or removed. After application or removal of the heddles the side support can be swung back into the plane of the heddle frame whereby the side support is retained in a central position. The side support is then secured in the operative position by tightening of the screw bolts which form the pivot axis. The drawing illustrates by way of example two embodiments of the invention.

IN THE DRAWINGS:

FIG. 1 is an elevational view of one side support in its operative position thereof with fragmentary end portions of associated upper and lower frame staves attached thereto.

FIG. 2 is a fragmentary top plan view of the upper frame stave.

FIG. 3 is an elevatonal view similar to FIG. 1 but with the side support shown in an outwardly pivoted position.

FIG. 4 is a top plan view of FIG. 2 showing the side support in the outwardly pivoted position.

FIG. 5 is a view of the heddle frame with the side support in an outwardly pivoted position and resting on a horizontal support surface.

FIG. 6 is an elevational view of a corner of a heddle frame showing a second embodiment of the invention- ,and

FIG. 7 is a vertical sectional view taken along the lines VII-VII of FIG. 6.

In accordance with the embodiment of the invention illustrated in FIGS. 1 5, the frame staves are designated by the reference character 1 and the heddle carrying rods extending to the ends of the staves and fixedly connected thereto are designated by the reference character 2. A heddle which is threaded on the rods 2 is schematically illustrated and is designated by the reference character 3. The frame staves are advantageously made from a lightweight metal and are provided at each end with a longitudinally extending slit 4. Bar members 5 and 6 made of steel are fixedly secured outwardly and inwardly to the slotted ends of the staves 1. The outer bar members are provided each with a smooth bore 7 devoid of any threads, while the inner bar members 6 are provided each with a threaded bore 8. The

bores

7 and 8 accommodate a screw bolt 9. The two bolts 9 at the vertically spaced ends of the frame staves 1 are arranged in axial alignment and also so that they are parallel to the longitudinal axis of the side sup port 10. Plate members 11 are fixed to the upper and the lower ends of the side support 10. The plate members 11 are so dimensioned that they can be accommodated between the spaced bar members 5 and 6. The plate members 11 are each provided with a smooth bore 12 for the passage of the bolt 9. It is obvious that when the bolts 9 are inserted into the

aligned bores

7,12 and are screwed home into the threaded bores 8, the plates 11 and the side support 10 are clamped in a fixed position,but when the bolts 9 are loosened the same serve as a hinge axis for the side support 10.

As shown in FIGS. 2 4, the side support 10 is formed at its upper and lower ends each with a recess 13 into which enters a complementary formed projection 14 on each of the outer bar members 5. In this manner it is possible to pivot the side support 10 in the direction of the arrow A from the position shown in FIG. 2 into the position shown in the FIGS 3 to 5 and precisely locate the side support 10in its operative position. The side support may be pivoted as shown in the FIGS. 4 and 5 to an angle greater than so that the heddles may be easily attached or removed. FIG. 5 demonstrates the utility of pivoting the side support more than 90 and when the heddle frame is placed on a table the frame staves 1 are spaced from the support surface and the heddles may be attached and removed without interference. v

The lateral support 10 in the form illustrated is provided with heddle stops in the form of projections 16. The projections 16 prevent the heddles from becoming detached from the heddle track rods during the operation.

To permit additional centering of the side support in its operative position the plate members 1 1 may be provided with a pin 17 which has a rounded projecting end which enters into a recess in the outer bar member 5. The slits 4 assure a satisfactory flexibility so that the centering is unobjectionably achieved. It is also possible to achieve a central positioning of the side support in its operative position by omitting the projection 14 and the complementary recess 13 and using the pin 17 alone for centering.

The embodiment of the invention shown in FIGS. 6 and 7, in which identical parts are identified by like reference characters, differs primarily from the embodiment of FIGS. 1 in that the side support 10 is not provided with a recess 13 and the outer bar members 5 are not provided with a stop forming projection 14. The space between the bar members 5 and 6 is thereby smooth and uninterrupted. The centering in the operative position is accomplished by the provision of ribs 18 on the top and bottom faces of the plate member 11 which engage complementary grooves formed in the bar members 5 and 6. When the side support is pivoted either outwardly or inwardly, the bar members 5 and 6 yield a distance about double the height of the ribs 18, which due to the slit 4 is easily possible.

The above described connection of the side support with the frame staves solves the positioning problem in that a tightening of the screw bolts 9 causes the connection between the frame staves and the side support to become stationary in the desired position. Upon loosening of the screw bolts one or two turns the side support may be pivoted outwardly and returned.

in the outwardly turned position the ends of the heddle carrying rods are exposed and the heddles may be either threaded onto the rods or may be removed therefrom. Thereafter, the side support again may be easily returned to its operative position and the bolts tightened.There are no bearings or releasable fastening means connected to or associated with the ends of the heddle carrying rods so that wear on these parts is impossible.

Since the pivoted side support remains connected to the upper and lower frame staves during the placement or removal of the heddles on the heddle carrying rods 2 it follows that the vertical distance between the heddle carrying rods remains constant. This facilitates the placement or removal of the heddles.

The construction also permits a complete removal of the side support when the bolts 9 are removed.

For additional security it is also possible to insert additional bolts in the bar members 5, 6 and the plate members 11. This, however, is a disadvantage, because these additional bolts must be removed before the side support can be pivoted about the other bolts and therefore this modification is used only in special cases.

What I claim is:

l. A heddle frame having side supports and an upper and a lower stave and a heddle carrying rod fixedly attached along the entire length of each of said staves, at least one of said side supports having a plate member attached to each of its ends and said plate members extending into recesses provided in the adjacent ends of said staves, at least one bolt releasably but firmly connecting at least one end of said staves with the plate member extending into its associated recess, whereby said bolts extending through said plate members on one of said side supports are arranged in axial alignment with each other and parallel to the longitudinal axis of said side support, so that upon loosening of said bolts said side support is hinge-like swingable about said axis which is parallel to said longitudinal axis of said side support.

2. A heddle frame according to claim 1, wherein the plate members on the side support are disposed in straight open recesses of said staves so as to be swingable to both sides of the heddle frame plane about said bolts (FIGS. 6 and 7).

3. A heddle frame according to claim 1, including abutments on the staves which in the operative position of the heddle frame engage said plate members on said side support and permit a swingable movement of said side support to one side only.

4. A heddle frame according to claim 1, in which the pivot axis of said side support coincide with the axis of said coaxially disposed bolts.

5. A heddle frame according to claim 1, wherein the plate members on the side support are resiliently clamped between bar members attached to the staves by means of said bolts.

6. A heddle frame according to claim 1, wherein the plate members on said side support are provided with locking means for holding the side support in the plane of the heddle frame.

7. A heddle frame according to claim 1, wherein the plate members on said side support are provided with locking means for holding the side support in the plane of the heddle frame, said locking means comprise complementary ribs and grooves provided on said plate members and bar members respectively.

8. A heddle frame according to claim 1, wherein the plate members on said side support are provided with locking means for holding the side support in the plane of the heddle frame, said locking means comprise a projecting pin in one of said members and a cooperating recess in the other members.

1: IF l i i

Claims

1. A heddle frame having side supports and an upper and a lower stave and a heddle carrying rod fixedly attached along the entire length of each of said staves, at least one of said side supports having a plate member attached to each of its ends and said plate members extending into recesses provided in the adjacent ends of said staves, at least one bolt releasably but firmly connecting at least one end of said staves with the plate member extending into its associated recess, whereby said bolts extending through said plate members on one of said side supports are arranged in axial alignment with each other and parallel to the longitudinal axis of said side support, so that upon loosening of said bolts said side support is hinge-like swingable about said axis which is parallel to said longitudinal axis of said side support.