US473873A - Tack or nail driver - Google Patents

Description

(No Model.)v

C. B. GODFREY.

TACK 0B. NAIL DRIVER. No. 473,873. Patented-Apr. 26, 1892.

yll/l/lll//l/ll U12/6109536.51 v9 km/r MMM/4 y M Auf UNITED STATES PATENT OEEICE9 CHARLES li. (iODFREY, OF MILFORD, MASSACHUSETTS, ASSIGNOR rlO THE MCKAY da COPELAND LASTING MACHINE COMPANY, OF PORTLAND,

MAINE.

TACK 0R NAIL'DRWER.'

SPECIFICATION forming part of Eet-.ters Patent No. 473,873, dated April 26. 1892.

Application filed .Tuly 28, 1891. Serial No. 400,984. (No model.)

To @ZZ whom t may concern.-

le it known that l, CHARLES B. GODEEEY, of Milford, county of v\\'o1eesi',c1', State of Massachusetts, have invented an Improvement in Nail or Tack .Driving Apparatus, of which the following description, in connection with the accompanying drawings, isa speci icatiou, like letters and numerals on the drawings representing like parts.

This invention has for its obj ect to improve and simplify the construction of apparatus employed for driving tacks in the manufacture of boots and shoes and for other purposes.

rlhe machine herein to be described may be used with great advantage in connection with tack-strips, preferablyv paper-strips set with headed tacks, the bodies of the tacks at the delivery end of the strip being engaged and fed forward in succession between Vthe raised driver and the hole in the nail tube or nose by a rotating feedingdeviee. The tackstrip comes to the feeding devices through a suitable gnideway or chute, and, as shown, the form' of the feeding-wheel is such as to support the tack-strip while the drivel' descends on the head of a tack to drive it out ol the strip, the tack in its descent and the driver in driving the tack descending through the pocket of the wheel in which the tack is held. The feed-wheel is show.. as provided with a ratchet, which is engaged b), a pawl carried or moved by a pawl-earrier. 'l'he extent of movement is so controlled by a suitable cam that the l'eedingwheel has a full feeding stroke given to it only after the driver has had imparted to it full or tack-driving movements.. ln o1 her words, unless the descent of the driver is sullicient to drive a tack the feeding-driver will not be actuated to l'eed the tack-strip. This provision of suspending the leed until after a tack has been driven prevents the liability or possibility of the driver driving more than one tack into the nail-tube, but not out of the nail-tube, and consequently the nail-tube will not he jammed or filledl with loose tacks.

Figure l is a vertical central cross-section ol` a tack-driving implement embodying my invention. Figs. 2 4and ii show the implement separated in the division-liuc of the two halves of the shell or hand-piece, the feed-wheel being shown in elevation in Fig. 3. Fig. t shows the feeding-wheel detached and in top view; Fig. 5, a section in the line Fig. 3, the dotted line ai', Eig. 5, showing the line of section for Fig. l.

'l`he's`li'ell or hand-piece is composed of two pieces (t Y), united by suitable screws a and provided at its lower end with a suitable nose or nail-tube ai, provided, preferably, with a hollow steel nipple a. The upper end of the hand-piece is chambered,as at a",to receive the lower end of aspringb,surrouuding the driverbar h', the upper end of which spring acts against the under side of the head b2 of the said bar. 'lhe driver Z13 may be united tothe driverbar in any well-known or suitable manner. The driver-bar has a cam-slot of several gradients, preferably a rather straight central portion 2 and cam or inclined ends 34. The driver always stands in and is guided by a steady guide or stripper Il. 'lhe part l) of the hand-piece, as shown, has a hub rlP', which receives a stud d, extended from the back ot the pawl controller or lever (Z1, and a roller or other stud d, which enters the cani-slots 2 Si `t. 'lhe paul-controller has at its lowerend a pawl d, normally acted upon by a spring d", the said pawl engaging a crown -toothed ratchet-wheel 22 at the upper side of or attached to or movingr with the feed-wheelj, having a series of pockets oruail-passagesj", the walls between the said passages, as best shown by the wall .i, Fig. 5, being so shaped as to readily enter the spaces between the bodies of two adjacent tacks of :x tack-strip, as the said tacks come to the saidfeed-wheel through the guide or race way Wotauy usual or suitable Shape or length. 'lhe feed-wheel runs close to the inner end 5 ofv one ol' the pieces forming the guideway,as in IFig. and forms an iuclosed pocket or passage for the tack to be driven by the driver. A pawl fj acts as a detent to prevent retrograde movement ot the feed-wheel. 'lhe stud r/ acts as a center for thefeedovheel.

In operation the strip containing the tack to be driven rests on the upper side of the feed-heel between its periphery and the troin the same by raceway, and has States Patent No.

ratchet-wheel 22, the feed-wheel thus ing the strip quite about the head otthe tack 1n one of the pockets and about to be driven the driver into the nose and from the nose into the steek, leather, or other material.

In operation, it the driver-bar is not forced down sutliciently to drive a tack from the nose or it the part l ot the slot 3 t does not act on the roll s the paw lf'ontroller will not have a full throw, but will have onlya partial throw, not enough to put the pointof the pawl d" behind a tooth of the ratchet or crown wheel. It the bar b' has less than a nail-drivmg movement, the pand-controller will be vi.- brated only far enough to let the pawl slide np and down on one and the same tooth' 22.

This invention is not to be limited to` the exact forni ot wheel shown, nor to the exact forni of wheel 22, nor to the particular shape of the driver-bar, the cani-slot, and the pawlcontroller, all or either.

Itwill be understood that the wheel may be used in tack or nail driving machines in connection with a chute or raceway of usual character and feed any usualnails.

The teeth left at the periphery ot the feedwheel between the open pockets izo-operate with the-inner ends of the gruidcwaynd the ends ot the latter tangent to the wheel permit one open pocketafter another to be brought in succession opposite the end of the guideway. The slots opening from the periphery ot the wheel into the open spaces j" are so made as to leave hooks h to engage the body of a tack or nail. f,

I am aware that a wheel notched at its periphery has received buttons. frein a buttonby an intermitting movement ot the wheel placed the-said buttons in position with relation to a driver for a buttonfastener, so that a'button-fastener has been driven throughthe material and through the eye ofthe button.

I do not claim a'fythinglshown in United Having described iny invention, what I deein as novel, and desire to secure by Letters Patent of the United- Statesisfsupportl an extended l. A nail or tack driving apparatus containing the following' instrumentalities, viz: a shell or case, a nail tube or delivery connected to one end of said shell or case, a longitudinally-movabledriver-bar,provided-with a earn, a dri ver connected with said driver-bar, a feed-wheel loca-ted between the said tube and the lower end ot the said driver-bar when in its elevated position, said feed-wheel having peripheral pockets open at one side, the upper part ot the feed-wheel serving as an anvil or supportfor a tack-strip, a tack-sjrp guideway tangential to the said feed-wheel and having portion to co-operate with projections at opposite sides ot the pocket from which the n'ail is to be driven, a lever interposed between the said driver-bar and 1eedwheel,` said lever having* a pawl to engage a ratchet ot the feed-wheel and a projection te be actuated by the cam-surface of the driverbar, and a detent to restrain retrograde :netion of the feed-wheel, substantially as shown and described.

2. The shell or hand-piece, the feed-wheei having at its periphery open pockets and iti-- terniediate teeth formed by the side walls of the pockets, and a tangential guideway having a portion extended to close the open side o t the adjacent pocket and having near its center of rotation a series ot and having a tack-strip-supporting surface between the ratchet-teeth ano ratchet-teeth,A

its periphery. ,K i

combined with a driver, a driver-bar, a pawl,

a pani-controller, and a Cain having a straight central portion and oppositely-inelined port-ions to actuate the pawl-controller in such manner, substantially pawl will pass behind a ratchet-tooth onl \,7 after e, full vdriving-strolte of the driver, as s et forth.

In testimony whereof I have signed myy naine to this specification in the presence of two subscribing witnesses.

` "oneness n. eon'rnsv Witnesses:

Geo. W. GREGORY, FaANCEs M. NOBLE.

endv

as described, that the

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