US958035A - Tack-pounder. - Google Patents

Description

W. C. STEWART.

TACK POUNDER.

APPLICATION FILED SEPT. 17, 1909.

Patented May 17, 1910.

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LYNN, Massncnusnrzrsassreuoaro 'rHos c. PLANT,

F BOBTUN, MASSACHUSETTS.

Tecn-routines.. l

pecieation of Lettera Patent. application and september rz, 1909'. serial uo. 513,184.

Patent ay mf, pppn To all lwhom it may concern:

Be it known that-l, WILLIAM C. STEWART, a subject of the King of 'Greatdritaim residing at Lynn, in the countyof -Essex and State of Massachusetts, have invented an llmprovement in Tack-Founders, of which the following description', in connection with the accompanying drawings, is a specification, like ligures on the drawings represent ing like parts. j

'llhis invention to be hereinafter described relates to machines for pounding or driving Y tacks which may project above a surface into which they have been previously driven.

rl`he object of this invention is to provide a machine which can be operated over the edges of a lasted shoe, especially of the McKay type, for the purpose of removing an projections it may encounter `and to bring the sole to an even and uniform sur face. These projections consist principally of the heads of tacks, used to attach the 1 upper to the inner sole, which have not been.

drlven sufficiently or which have been driven in such irregular manner as to leave the heads thereof on an angle to the sole surface.

'llhere is shown in the aceompanyin drawj ings one of the many forms in wlnch'this invention may be embodiedand this will be described as a invention. j

ln the drawings :-Figure 1 is a side view of a tack pounder embodying the present invention, the supporting column being partly broken away; Fig. 2 is a front view looking from the left of Fig. 1; Fig. 3 is ya section on the line Sal-3, Fig. 2; and Fig. 4: is an good practical form of the isometric view showing two of the plungers and'their retaining pin.

Supported on the column 1 are bearings p 3, 3, in which is a shaft 2 carrying a pulley 5. A belt 4 driven by any convenient means is adapted to drive the pulley and shaft.

Fixed to the end ofthe shaft 2, as shown, f are a number of pounderV arms 6, in this case three, but any number may be used. In 'the preferred form of the invention these pounder arms are disposed with their poundmg surfaces in a helical path around the shaft. The ends of the arms are rounded on one side, as indicated in Fig. 2, sothat as the shaft revolves in the direction of the arrow in 2, each arm will strike a sliding blow on any plunger 7 which may be' in its path.

The plungers 7 are preferably, though not necessarily,v grouped in three rows with three plungers 1n each row, and are disposed below the pounder arms in a bearing` 8 projecting from or connected to the column4 1. Extending into the bearing Sia-re two pins 9 flattened on their inner ends, as at 16, to

`pass throu h slots l1 in the plungers 7, as

shown in i s. 2, 3' and 4L, which serve to limit the motion of said plungers, as will be readily understood.

From vthe construction thus far described it will be apparent that as the shaft 2 rotates, the "pounder arms 6 will act upon the ytop portion ofany of the plungers 7 which may be in their paths, and that the rounded ends of the pounder arms cause the plun ers engaged thereby to descend, it being un erstood that the plungers in each group .act each independent of the other.

In order that the plungers may not rebound when they strike the pins 9 under the impetus of the arms 6, there is provided means for retarding too free `action of the` plungers, land as one means to this end a rictonal Vdevice may be caused to coact with each row of plungers, such as three screws 12 which may be adjusted against leather ieces 13 'which in turn bear against one ef t e plungers of agroup.` Upon the sides of the bearing 8 are two stop ngers 14: adjustable vertically by the screws 15 in the slots 16, andagainst the lower ends of which "the sole of the shoe may at times be forced. l

-ln ,the operation of thisl machine the shoe by ythe iron plate on a last and pro` ecting to the surface of the uppter. It is pre erably desirable that the sha 2 be driven at a high `speed to impart rapid blows to theA plungers. j

What is claimed is: 41. In a tack pounder, the combination of the va shaft, a series of pounder arms driven by said shaft, a series of plungers, a bearing for said plungers in which they are held normally out of the `ath of movement of the pounder arms, an means for operating the shaft to cause the plungers when raised by the work to pound and depress any projection thereon and to act upon the Work about said projection.

2. In a tack pounder, the combination of a shaft, a seriesof pounder arms arranged thereon in different transverse planes, a plurality of plungers arranged in planes corresponding to the planes of the pounder arms, a bearing for said plungers in which they are held normally out of the path of the pounder arms, and means for operatingl the shaft to cause the pounder arms to act each 'se arately on its corresponding plunger to, epress or pound any projection on the work and pound the Work about said projection when the plungers are raised by the Work.

3. In a tack pounder, the combination of a shaft, a series of pounder arms arranged thereon indifferent transverse planes, a plul path of the pounder arms, and means for o erating the shaft for causing each of the p ungers of a group to be operated by a ounder arm when the plungers are ralsed y the Work to pound any projection and to act upon the Work about the projection.

4; In a tack pounder, the combination of a shaft, a series of pounder arms driven by v said shaft, a series ofplungers, a bearin for said plungers in which they are held normally out of .the path of movement of plounder arms, retarding means acting on t e series of plungers, and means for operatin the shaft to .cause the plungers when ralsed by the Work to pound and depress any projection thereon and to act upon the work about said projection.

5. In a tack pounder, the combination of a shaft, a series of pounder arms driven by said shaft, a series of` plungersha bearing for said plungers in which they are hel normally out of the path of movement of the pounder arms, means for operating the shaft to cause the plungers when raised by the work to pound and depress any projection thereon and to act upon the work about said projection, and stops projecting at each side of the series of lungers.

6. In a tack poun er, the combination of a shaft, a series of pounder arms having curved end portions and arranged in different transverse planes, a series of plungers each having a slot and disposed one in the plane of each of the pounder arms, a pin passing through the slots in the plungers, and means for operating the shaft.

7. In a tack pounder, the combination of a shaft having a series of ounder arms dis osed with their poun ing surfaces helically about said shaft, a bearing, a series of plungers in said bearing coacting with each of said pounder arms, and means for operating the shaft to cause the series of plungers tov act upon any projection on the Work and pound the work adjacent said projection when they are raised by the work.

`8. In a tack pounder, the combination of a shaft having a series of ounder arms disposed with their poun ing surfaces helically about said shaft, a bearing, a series of plungers in said bearin coacting with each of said pounder arms, rictional retarding means for said plungers, and means for operating the shaft to cause the series of

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