US77611A - Walter -haslam - Google Patents

Description

WALTER -IIASLAb/I, OF NEW BRITAIN, CONNECTICUT.

Letters Patent No. 77,'611, dated .May 5, 1868.

'IMPROVEMENT IN SEAMING-MACHINES.

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TO ALL WHO IT MAY CONCERN:

Be it known `that I, WALTER HASLAM, of New Britain, county of Hartford,'and State of Connecticut, have invented certain new and useful Improvements in seeming-Machines for unitingz,i the edges of knitted fabrics; and to enable others skilled in the art to make and use the same, I' will proceed to describe my invention, makingv reference to the accompanying drawings, in which like letters indicate like parts in each of the figures.

In the scaming-machincs now in use for the above-stated purpose, the bed to which the leads or jacks, (which sustain the loop-supporting points or hooks) are secured, is screwed directly and permanently to the frame of the machine, and with no intention of removal, .except when repairsare needed. When, however, the

'Y bed or plate is thus secured, and which may be deemed, for all practical purposes of seeming, as permanent a mode of attachment as if the frame of the machine and the bed were cast inl one piece, the capacity of the 'machine is quite limited, and for the following reasons z y Even with skilled operatives much time is necessarily consumed in attaching to the whole range of points or hooks, the loops of thc two selvedges of a fabric, inasmuch a's it is important that not a loop be missed on 'either selvcdge.

When the bed-plateof these points is attached, as above stated, or in any similar manner, to the machine, the whole operation ofthe seaming-mechanism must cease, both during the period when a piece of fabric is being,r attached prior to seaming, and also during the period when it is being detached to make room for another picco.

This loss of'time andlabor is so serious a matter as to require some half dozen expensive machines, and factory-room to receive them, where one machine could do their whole work, if a set-'up" fabric, all ready for scaming, could be applied to the machine the moment thc preceding piece has been finished; and to effect which is the object of my invention, which consists in securing, upon the frame ofthe seeming-machine, stout brackets, 'to rcceiveand bear up the clpth-holding plate which is telit closelyr therein; in providing a stop, to insure the placing of the plate in its true position, so that the seeming-mechanism may properly perform its duty relatively tothe loops of the suspended fabric; and a notch and thumb-screw, or theirequivalents, to permit the instant locking of the plate when placed in the machine, and also its prompt release whenever it is to be removed and another one, previously supplied with fabric, substituted for it. I

A In the accompanying drawings#- Figure 1 is a top' view of the device.

Figure 2 is a front view of the same.

Figure 3 is an end View. i

a is the hed or portion vof a seaming-machine. l

bare points, upon which the loops of the fabric are arranged for being connected by the action ofthe machine These points are secured in the jacks or leads c, in the usual way.

The jacks or leads e are secured to the plate d by screws in a lixed position.

c e are brackets, secured firmly to the front plate of the machine, and they are so shaped as to receive and t'orm'a guidingspacc,f, to receive,`hold, and guide the plate d into its proper place and position for the action.

of the machine, and yet allow of its ready removal therefrom by the mero act of lifting..

y g is a stop, against which one end of the/plate or point-bar Z strikes, to bring the points b accurately to their proper or relative position in the machine. l

7i is a slit formed in the lower edge ofthe plate d, which drops down astride of the fastener or thumb-screw z', by means of which'screw, or its equivalent device, the plates d are quickly and firmly securedto or released from thc machine.

y Now, it will be clearly seen that by providing a suitable holdingdcvice,'for holding the plate or point-bars d, one, or any desired number of point-bars mvay be successively and quickly introduced into and removed from the machine, so as to keep the machine almost in continuous operation, thereby accomplishing in 'a given time, with one machine, what, in the ordinary way, would require nearly or quite' six machines; andalso needing the attention of bnt one experienced person at the machine, whilst inexperienced or ordinary workmen or attendants can prepare the work n'readiness for the machine, and as ropidily as may be desired'. Y

It will also beseen that this plate or po intba.r drniay be held in various ways other than by n-thumb-scx'ew,

as by a thumb-catch, when desirable.

I have thus endeavored to show the nature, construction, and-advantage derived from this improvement, so

.as to enable others skilled in the art to mke and use the same.

I do not .claim securing the plate oZ xedly andpermanently to the front plate or bed of 'a machine, by

means of ve'oorl-screws, for I am aware that' that haselready been done; but

I claim thecpmbinetion, with tle brackets e and stop g, of the slotted plate d, provided with its loop-holding- A points, and a. thuxh-screw, for the ready ti pose set forth.

' WALTER HASIZAM., [1.. s].

Witness es N. C. WILDER, J. W. Buss.

ghtening and releasing of the plete, substantially as und for the pur-

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