US17734A - Machine fob tapping nuts - Google Patents

Description

ALMON B. GLOVER, OF BIRMINGHAM, CONNECTICUT.

MACHINE FOR TAPPINGr NUTS.

Specification of Letters Patent No. 17,734, dated July 7, 1857.

T 0 all whom it may concern:

Be it known that I, ALMON B. GLovER, of Birmingham, in the county of New Haven and State of Connecticut, have invented a new and Improved Machine for Tapping Nuts; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the anneXed drawings, making a part of this specification, in which- Figure l is a vertical longitudinal section of my improvement; x, Fig. 3, indicating the plane of section. Fig. 2 is an end view of ditto. Fig. 3 is a plan or top view of ditto. Fig. 4 is a detached plan or top view of the device by which the motion of the arbor is reversed. Fig. 5 is a detached view of the device employed for feeding the blanks into the tap box.

Similar letters of reference indicate corresponding parts in the several figures.

This invention relates to a new and improved machine for tapping nuts, wherein the tap is fed to the blanks automatically and also due provision made for any irregularity in the operation of the tap, or the device which feeds the blanks to the same.

The invention consists in the peculiar means employed for e-Eecting the purpose' above mentioned.

To enable those skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

A represents a framing on the upper part of which a socket B is placed, said socket being fitted in a suitable bearing (a).

B1 represents a mandrel or arbor, the inner end of which is fitted in the socket B, and is Iliade to turn therewith by means of a pin (b), which passes transversely through the mandrel or arbor and fits in a slot made in the end of the socket. On the arbor B1, a shoulder or collar (c), is ermanently secured, and a sleeve (d) is p aced loosely on the arbor B1, said sleeve having a spiral spring (c) placed within it. One end of this spring (c) bears against a pin (f), which passes through the arbor B, the ends of said pin fitting in slots (g) in the sleeve (d).

The outer end of the arbor B1 has a tap C secured in it. The socket B has a toothed wheel (i) on it, the wheel (i) being on the outer end of the socket B.

D represents a shaft which is placed transversely on one end of the upper part of the framing A. A driving pulley E is placed on one end of this shaft D, and two beveled wheels F, F, are laced loosely on the shaft D. On the sha t D there is also placed loosely a collar (j), the center portion of which has a groove (le) made in it circumferentially, said groove having a fork (l) fitted in it.

The ends of the collar (j) have pins (m) secured in them, two pins at each side and two pins (n) are also secured in the inner side of each wheel F. The collar (j) is secured on the shaft D by means of a feather and groove so that said collar is made to turn with the shaft and at the same time allowed to slide on it.

G is a shaft which is placed in the framing A, below the arbor B, and in the same plane. This shaft G, has a bow shaped bar H, placed loosely on it, and one end of the bar H, has a projection (i) attached to it; said projection eilig provided with a pin (p) which is fitted in a special roove (g), in a collar (1"), on the shaft G. T e end (s) of the collar (r), adjoining the end of the bar H is made inclined or obli ue with its axis and the end (t), of the bar I, which adjoins it is of corres onding form as shown clearly in Fig. 1. T e bar H has a vertical rod I attached to it and the arbor B1 passes through the up er end of said rod the rod I being between tife shoulder or collar (c), and the sleeve (d).

The socket B, is connected by means of gearing (1), (2), (3), (4), with a shaft J, the outer end of which has a pinion (u), on it. This inion (u) gears into a toothed wheel K, whic is laced on the outer end of4 the shaft G. T ewheel K, has a segment slot (c), made through it near its periphery and a pin or projection (w), is fitted in said slot (c). This pin or projection is rendered adjustable, that is, may be moved and secured at any desired point within the slot (c). A pin or projection (w1) is permanently secured at one end of the slot (c).

The fork (Z) which is fitted in the groove (7c) is attached to the upper end of a bar L, the lower end of which 1s fitted and allowed to work or turn on a projecting rod (z), attached to the framing.

To each side of the bar L a spring (al) is attached and a horizontal bar M is attached to the framing A, just below the shaft D, the bar being parallel with said shaft. On this bar M, two arms or bars (b1), (b1) are pivoted as shown at (c1), (c1) Each arm or bar (b1) has a notch (d1), made in it, and the bar L,

` catches alternately into these notches as will attached to them, the opposite end of said spring being attached to the shaft N. The arms (g1), are constructed at their inner ends and are placed loosely on the shaft N, a pin (i), preventing the arms from yturning or moving on the shaft in one direction, and the spring (h1), preventing them from turning in the other direction.

On the outer end ofthe shaft N, an arm (y1), is attached. The upper end of this arm is slotted and a pin (Z111), which is attached to a slide (Z1), fits in said slot. The slide (l1) works in a socket (m1), which is attached tranversely to the end of a feed board O, on the framing A.y

The inner edge of the feed board O, has a vertical ledge (11,1), attached to it, on'which a follower (o1), is fitted and allowed to slide freely thereon. The follower is merely a rectangular bar fitted in any proper manner on the ledge (n1), a string (p1) is attached to the under side of the follower, and this string passes over pulleys (g1), and has a weight (r1) attached to it. To the end of the feed board O, and in line with the slide (Z1), a trough or boX (s1), is placed.

The operation is as follows: The blanks shown in red in Figs. 1, 3, and 5, are placed on the feed board O, and the follower (01) is drawn back and allowed to bear against the end blank. Several rows of blanks may be placed on the feed board O, a bar or plate (u1), dividing the row adjoining the ledge (n1), from the others. Motion is given the driven pulley E, in any proper manner and the -two wheels F, F, are connected alternately with the shaft D, by means of the sliding collar (j), which is operated by the bar L, the bar L being vibrated by the projection (w), (w1), in the slot (c), in the wheel K. This alternate connection of the wheels F, with the shaft D, gives a rotating reciprocating motion to the arbor B1, and shaft G. Each time the arbor B1, is moved from left to right the arbor is moved forward in the direction indicated by the arrow 11, by means of the oblique end (s), of the collar (r), which is in fact a cam. The tap C, is fed to its work during this forward movement of the arbor B1, a blank being shoved into the tap box (81) by the slide (Z1), just previous to the forward movement of the arbor and the tap passes through a hole in the blank and cuts the thread. When the arbor B1, turns in the reverse direction, viz, from right to left, the arbor B1 will be moved backward in the direction indicated by arrow 2, in conse? fkuence of the pin (p), on the projection (o), tting in the spiral groove (g), and the tap is moved bacl. The slide (Z) is operated at the proper time back and forth by means of the tappet (f1) acting alternately against the arms (g1), (g1), and the blanks are fed in front of the slide (Z1), by the follower (o1). Each time a blank is fed into the boX (o1), aV finished nut is forced out. In case these should be any irregularity in the feeding of the blanks within the tap boX (81), and the forward movement of the arbor B1 should be opposedV thereby, the spring (e) within the sleeve (d) will yield or give so that the sleeve (d) will be moved instead of the arbor B1, therefore preventing the arbor or any of the parts connected therewith from being subjected to anyundue strain on account Alike provision is also y of the obstruction. made for the device by which -the blanks are fed into the tap box for in case the movement of the slide (Z1), is obstructed or opposed the spring (h1) will yield or give and allow the arms (g1) a requisite degree of movement independent of the shaft N.

From the above description of parts it will be seen that the arbor B1, has a rotating, reciprocating motion given it the tap C, fed to its work while turning from left to right, and moved back while turning in the reverse direction, and the blanks fed into the tap boX (s1), in front of the tap by the movement of the pulley E, the several parts being operated automatically.

Havin thus described my invention, what I c aim as new, and desire to secure by Letters Patent, is:

l. I claim giving the arbor B1, simul-l taneously with its reciprocating rotary motion, a longitudinal movement back and forth, by means of the collar (r), placed on the shaft G, and provided with the spiral groove (g), and inclined or oblique end (s), and the bar I-I, which is placed loosely on the shaft G, and connectedv with said collar as described.

2.'I claim the employment or useof the spring (e), placed within the sleeve (d), and the spring (n1) placed on the shaft N, and connected with the arms (g1), (g1), for the purpose of allowing the arbor B1, and arms (g1), (g1), an independent movement and thereby preventing any injury which might otherwise be produced by any irregularity in the feeding of the blanks within the tap boX.

ALMGN B. GLOVER.

Witnesses: v

JOSEPH P. CANFIELD, SIDNEY A. DowNEs.

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