US473136A - Pegging-machine - Google Patents

Description

( l-) 4 Sheets-Sheet 1.

E. -WO0D'WARD.

' PEGGING MACHINE. No. 473,136. Patented Apr. 19, 1892.

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PEGGING MACHINE N0.-473,136. Patented Apr. 19, 1892.

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PEGGING MAGHINE.

I (N o Mode l.) I I 4 Sheets-Sheet 3.

I No. 473,136. Patented A r. .19, 1892.

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E. WOODWARD. I

I PEGGING MACHINE. I

- No. 473,136. Patented Apr. 19, 1892.

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UNITED STATES PATENT OFFICE.

ERASTUS \VOODWVARD, OF. SOMERVILLE, MASSACHUSETTS.

PEGGlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 473,136, dated April 19, 1892.

Application filed July 24, 1891. Serial No. 400,592- (No model.)

The object of my invention is to combine in a tack-driving machine for driving tacks in boots and shoes of the class in which most of the moving parts of the machine are in continuous motion, although the tack-feeding parts are not in motion except when the boot or shoe is presented by a power-moved jack to the nose-piece of the machine and then but a single tack is driven, a mechanism by which the upward movement of the jack is effected by power transmitted from the drivingpulley, and a mechanism by which the feed motion is started independently of the nosepiece, the invention being particularly adapted for lasting boots and shoes. This object I attain by the mechanism shown in the accompanying drawings, in which v Figure 1 shows in side elevation the upper and lower parts of a tack-driving machine, only such details being shown as are required for an understanding of my device. Fig.2 is a viewin perspective showing connected operative parts from the'main shaft to the feed-controlling cam and the feed-starting mechanism. Fig. 3 is a view in perspective showing mechanism connected to the jack-lifting device for causing the feed mechanism to start. Fig. 4 is a detail showing pawl device for starting the feed. Fig. 5 is a section taken on lineman of Fig. 1. Fig. 6 represents a section on line 6 6, Fig. 1. Fig. 7 represents a perspective view showing the mechanism that communicates motion to the feed slides or gates. Fig. 8 represents a front elevation of parts of two raceways and the tack-feeding slides or gates therein. Fig. 9 represents a section on line 9 9, Fig. 8, looking downwardly.

In the drawings,A represents the standard of the machine, and B the upper fixed part,

which serves as a base or frame-work for (holding the tack feeding and driving mechanism and their adjuncts.

The main shaft of the machine isindicated by O. This main shaft has connected to it fast and loose pulleys C for receiving the driving-belt, as shown in Fig. l.

O is a pulley on the main shaft, which, acting through the belt H, pulley H, and clutch device H actuates the jack-lifting shaft H the action of lifting the jack taking place only at such times as may be determined by the operator, as will be hereinafter explained.

The driving mechanism consists of a driver 0 and reciprocating barC, cross-head O and crank-disk C and crank-pin, all operating in the usual manner.

The tacks or nails to be fed are placed in the receptacles D (1 The tack-feed wheels D are mounted on the transverse shaft D which is driven by a worm D, meshing with a worm-gear on the shaft D From the receptacles D d extend the two tack-raceways D and E the same being formed to guide tacks to the feedways in which the tack-feeding slides or gates E F move, as hereinafter described. One of said raceways is formed to guide tacks of a given size and the other to guide tacks of a different size.

It will be observed that my machine has but one feed-nozzle N and one driver, yet there are two feed-racewaysone intended for one kind of tack and the other for another kind of tack or nail. These tacks or nails may vary in length and in style or shape so long as they are adapted to pass through the nozzle and to be acted upon by the driver.

As one tack only can be driven at a time, the device for admitting the tack to the nozzle must determine from which raceway the tack shall be taken. The mechanism which determines this I will call the tack-feed-controlling mechanism, and will now describe it, referring more particularly to Figs. 6, 7, 8 and 9.

F and E represent two slides or gates, which are adapted to close, respectively, the raceways D E. These slides F and E also serve (after having been withdrawn to admit of a tack passing out of the raceway into the slideway to the right or left of the driveway) to force the tack from the slideway into the driveway-that is, into a position in which it will be acted upon by the driver (see Figs. 8 and 9) and forced through the nozzle or nosepiece and driver into the article being operated upon, their operating mechanism being so arranged that but one of the slides can be withdrawn at a time. The slide F (see Fig. 6) is attached to a hanger F, extending from the sliding quill'F", and the slide E is attached to a hanger E, extending from the sliding quill E. These two sliding quills E and E are both mounted on the same fixed rod or pin F Fig. at, one adapted to slide to the right and the other to theleft, as may be required to open the raceway D or the raceway E The two fixed slides are held normally in position that is, closed by the spring which connects with the arms F E, extending down ward from the quills F and E The quills F and E, that actuate the feed-slides F and E, have inwardly-extending studs, (indicated by dotted lines atf and c, Fig. (3,) which are respectively embraced by the forked ends of the oscillating arms F E These oscillating arms F E are pivoted, respectively, on the rockershaft F and the pin E and are free to swing upon them and are provided with shoulderstarts F E" by which they may be operated. The device for operating the arms F E consists of a lever F which is hung in an oscillating housing F, the housing F being mounted on the rocker-shaft F said rockershaft F being actuated by the arm F (extending from the boss F, affixed to the rockershaft F and the cam F The rocker-shaft F and through it the housing F and lever F is controlled as to its movement in one direction by the spring f the swell parts of the rotating cam F giving the contrary motions. The lever F besides having an oscillating motion in a vertical plane, (caused by the movement of the rocker-shaft F is so pivoted on a vertical pin f in thehousing F that it may be turned by hand to the right and left, as desired. If the outer end of said lever is turned to the right, it will be under the pin F on the arm F and when raised by the cam F will lift the shoulder-pin F and acting through the arm F will withdraw the tack-feed slide F from the raceway D and thus admit of a tack being fed into thepath of the driver. If, on the contrary, the lever F is turned to the left, then its inner end will act upon the shoulder-pin E of the arm E from above,

and through it and the con 11 ected parts already described cause the slide E to be-drawn from the mouth of the raceway E and thus allow a tack to pass into the path of the driver. The swinging movements of the lever F in a Vertical plane are made by the machine itself, but only at such times as the operator may have placed the article to be tacked in the proper position for being tacked, as will be explained hereinafter.

I will now explain the mechanism by which the operator may cause the cam to be moved by the constantly-running parts of the machine and to move sufficiently to allow one tack only to be fed and then to stop.

Referring to Fig. 2, the rotating cam F is mounted on a shaft in the bearings B B B",

the cam being put 011 the shaft so as to revolve with it. On this same shaft two ratchet-wheels F 1 and F are also mounted and made fast to it. It will be noticed that the ratchet-wheels F and F have each four divisions corresponding with the four divisions of the rotating cam F Two to-andfro working-pawls F and F are mounted on a rocker-piece F which receives a rocking motion on its axis) from the pitman F the pitman receiving its motion from an eccentric F" on the main shaft 0. The motion of the pawls F and F is such in relation to the teeth F- of the ratchet that when the said ratchet is in the position shown the pawls may move to and fro on the interval surfaces without coming in working contact with either of the teeth F but if the cam is made to turn a part revolution in the direction indicated by the arrow, Fig. 2, then the pawl F will take effect on one of the teeth and cause a sufficient rotation of the cam F to take place to move a feed-slidein the usual manner and allow a tack to be fed. Then the pawl F will take effect on the ratchet F and thus cause the cam F to make a further rotation and allow the feed-slide to assume its normal position, in which position the feed-way is closed so that no tack can be fed until the feeding mechanism is again put in action bythe operator. To effect this motion a second ratchet-wheel F (in all respects like the ratchet-wheel F and made fast to the same shaft) is used. This ratchetwheel F is made to turn by the operator, who places the article to be tacked onto the jack and under the nose-piece N. Then by causing the jack to rise up, as will be hereinafter explained, it will (through a mechanism to be explained) act on the ratchet-wheel F and give it the required amount of rotation to turn the ratchet-wheel F sufficiently to allow the pawl F to operate upon it and give the required motion to the cam F to operate the feed-slide, as above referred to. The motion thus given to the ratchet F and cam F leaves the ratchet F in such a position that the pawl F can actupon it and further turn it and the cam F so as to allow the feedslide to feed the tack to the driver. The action of the pawl F on the ratchet F leaves the said ratchet in its normal position-that is, in such a position that neither of the pawls F- F can act upon it again until the operator has again caused the feeding mechanism to opcrate.

I will now describe my device by the aid of which the operator is enabled to connect the moving parts of the machine with the jacklifting device and thus cause the jack to be raised up, which action will force the work up against the nose-piece, (ready to receive the tack.) The upward movement of the jack, acting through the rod It, as will be explained, will cause a tack-feeding slide to withdraw, and thus allow one tack to be fed, and one only.

IIO

H Fig. 1, is a shaftproperly mounted in the base of the standard of the machine. This shaft has upon it a loose friction-clutch pulley H and a clutch device H said device being operated by the foot-lever H H ,piv-

oted at H and acting through the ad justinglever H and the bell-crank lOV6I.H The pulley H is driven by the belt-H (see Fig. 1) and communicates its motion to the shaft I l through the clutch device H On the front end of the shaft H I have abeveled gear H, which engages with a segment-gear H on the lever RR,which is pivoted at H and adapted to operate the lever H said lever I-l being also pivoted at H said lever H serving to lift the jack foot-piece H to which it is attached by the pivotal pin H. To cause the jack foot-piece H and the jack to be raised up the operator places his foot on the lever H H and depressing it throws the clutch H into frictional connection with the running pulley 1-1. This causes the shaft H and the beveled gear H to make a part rotation, which in turn depresses the segment H which segment, acting through the lever R R, raises the lever H I will now describe my device for causing the ratchet-wheel F to make a part rotation and thus start the feed. The segment-gear H is connected with and'forms a part of the lever R R, (see Figs. 1 and 3,) so that any movement of the segment-gear causes a corresponding movement of the lever B R and consequently the boss R and stud R The jack-lifting lever H is attached to the rockershaft K, and, as the lever B R moves about the same fulcrum-center H as the rockershaft K does,it is evident that all of the parts would move' together if connected rigidly; but to admit of a small amount of independent motion of the lever B R, I have the following-described device: The member R of the lever R R passes under a wing of the lever H, as shownin Figs. 3 and 5, but does not usually come in actual contact with it, there being a space between the upper side of R and the under side of the lever H, as shown at m, Figs. 3 and 5. The two levers R R and H are held in their normal relation with each other by the spring K which is made fast to the rocker-shaft K (of which the lever H is a part) by a screw K the rearend of the spring resting on a projection K and also a part of the rocker-shaft K, the forward end K of the spring K resting on the end of the lever R R. From the above it is evident that as the segment-gear H is forced downward the front end of the lever B R will rise up and working the spring K K and the rocker-shaft K will cause the lever H to rise and lift the jack; but when the jack has brought the shoe up to the nosepiece of the tacking-machinethat is, in a position to receive the tackthen the jack can go no farther and the lever H will be stopped from further upward movement. Nowa continued movement of the segment 111 will force the lever B R upward, the spring K K and the open space m admitting of this movementthat is, there is a relative motion between the rocker-shaft K and the lever B B. This relative movement of the two levers results in this: The lever B R swings on a center at K formed on the arm K of the rocker-shaft K and has an arm R having a stud R the stud B being concentric with the center of the rocker-shaft K when the levers H and R R are in their normal position; but when the levers have had their relative movements as above, then the lever R R acting through the arm R will cause the stud R to movein the direction of the arrow at. This movement of the stud will throw the end of the lever R R (pivoted at R) downward, which willdraw the rod R down, which in turn will, acting through the pin R bell-crank lever B, pin R and pawl R cause the ratchet F to make a part rotation and thus start the feed device, as already set forth.

It will be observed that the operating feed slide or gate is normally in position to prevent the feeding of tacks to the driver and is caused to operate to feed one tack and then stop by an independent mechanism controlled by the operator, said mechanism being started or set in operation by an act of the operator and stopped automatically after the slide has fed one tack. It will also be observed that the feed-slide-operating mechanism is independent of the driving mechanism and of the nose-piece N, through which the tacks are driven.

In Letters Patent of the United States No. 426,160, granted to me April 22, 1890, I have shown a normally-inoperative tack-feed device, a movable nose-piece, and intermediate mechanism whereby the feed device is caused by the pressure of a sole against the nosepiece to feed one tack and then stop. My present invention differs from that shown in said patent in that the feed-slide-operating mechanism is independent of-the nose-piece, so that the nose-piece is not required to perform the duty of operating the tack-feed device.

An important advantage results from the employment of an independent tack-feeding mechanism, viz: The nose-piece, having no too tack-feeding duty to perform, can be set or adjusted at different heights for the purpose of varying the depth to which the tacks are driven, it being desirable to drive the tacks less deeply in some kinds of work than in others. If the nose-piece were used to operate the tack-feed, such adjustment would b impossible.

relieved by the independent tack feeding mechanism from the necessity of operating the tack-feed by the pressure of the work against the nose-piece. Hence the labor of presenting the work to the driving mechanism is materially lessened, the tack-feed being operated by the power of the machine, which power is made available by the pressureof the operators foot on the clutch-operating device. The machine used as last in dicated is useful for laying or tacking on solesan operation in which a jack is not required.

Theindependent feedslide-operating mechanism comprises a normally-inoperative motor, which is driven by the power of the machine, is started by the operator, and is provided with means for automatically stopping its operation after it has caused the slide or gate to feed one tack. Said motor in the organization of the machine here shown is composed of the eccentric F continuously revolved by the main shaft of the machine, the rocker-piece F with its pawl F receiving a continuous oscillating movement from the eccentric through the pitman F the shaft having the ratchet-wheel F and cam F and the devices that transmit motion from said cam to the slide or gate E or F when the shaft is turned to enable the oscillating pawl F to engage a tooth of the ratchet F and thus move said cam.

The means controlled by the operator, whereby said motor is started when andonly when the operator desires to supply a tack to the driveway, comprises the lever I1 and suitable connections between it and the m0- tor, whereby a movement of said lever is caused to start the motor. The connections between the lever H and the motor may be such as will enable the force exerted by the operators foot on the lever to start the motor; but I prefer the connections here shown, involving the employment of the power of the machine to start the motor, said connections comprising the continuously-running loose pulley II, the shaft I1 and the movable clutch device I1 connected with said shaft and adapt ed to engage the pulley and cause the rotation of the shaft, said clutch device being operated by the lever H and the device connecting the shaft H with the cam-shaft of the motor, whereby the rotation of the shaft H is caused to partly rotate the cam-shaft and enable the pawl F of the motor to move the cam F to its feed-slidemoving position. The pawl F oscillating with the pawl E and arranged to move the cam F to position to permit the feed-slide to resume its normal position and to move the ratchet F to position, which prevents the pawl F from further rotating said ratchet, constitutes a means whereby the motor is automatically stopped after performing its duty. The combination of these elements-via, first, a feed slide or gate normally in position to prevent tacks from reaching the drivew y l secondly, a power-operated motor adapted to give said slide a tack-feeding movement and organized to stop automatically, and, thirdly, devices controlled by the operator, whereby the motor may be started--is new and constitutes tackfeeding mechanism that isindependent of the driving mechanism, feeds a single tack in response to each act of the operator in starting the motor, and enables the nose-piece to secure other results, such as the regulation of the depth to which the tacks are driven, as above stated. In view of the novel character of said combination and of the useful results coming from it I do not limit myself to the mechanical construction and arrangement here shown of the elements composing the combination, and theconstruction of any or all of said elements may be varied within the limits of mechanical skill and judgment without departing from the spirit of my invention. This arrangement causes the successive operation of the jack and tack-feeding mechanism, the latter remaining inoperative until the jack has presented the work to the fixed crosspiece, and then operating to supplya tack, as described.

I claim- 1. In a tack-driving machine having a movable jack and tack-feeding mechanism, the combination of a jack-moving mechanism, a tack-feed-starting device mounted to move within certain limits, a yielding device, sub-- stantially as described, holding the jack-moving mechanism and tack-feed-starting device in unison when the jack is free, and a driving device acting upon said tack-feed-starting device to move said two parts together when the movement of the jack is not resisted and to move the tack-feed-starting device independently to start the feed when the movement of the jack is resisted.

2. In a tack-driving machine, the combination of a continuously-operatin g driving m echanism, including a reciprocating driver and a continueusly-running shaft which gives motion to the driver, a fixed nose-piece through which the tacks are driven, a tack-feed raceway arranged to guide tacks to the driving mechanism, a slide or gate normally in position to prevent the passage of tacks to the driving mechanism, slide or gate operating mechanism organized to stop automatically after moving the slide or gate to feed one tack, and means independent of the nose-piece for starting the slide or gate, said means including a foot-lever I1 located at the base of the machine, and a connecting-rod R adapted to transmit motion from the base of the machine and make the slide or gate operating mechanism operative, whereby the operator is enabled bya movement of his foot to cause the feeding of a tack to the continuously-reciprocating driver, as set forth.

3. In a tack-driving machine, the combination of a conti nuouslybperating driving mechanism, including a reciprocating driverand a continuously-running shaft which gives motion to the driver, a fixed nose-piece through which the tacks are driven, a tack-feed raceway arranged to guide tacks to the driving mechanism, a slide or gate normally in position to prevent the passage of tacks. to the driving mechanism, a motor adapted to give the slide or gate a tack-feeding movement, normally inoperative connections between the motor and the said continuously-running shaft, said connections being adapted when made operative to give the slide or gate the movement required to feed one tack, and means for making said connections operative, said means including a foot-lever H located at the base of the machine, and a connectingrod R engaged with the motor and adapted to make said connections operative, whereby the operator is enabled by a movement of his foot to cause the feeding of a tack to the continuously-reciprocating driver, as set forth.

4. In a tack-driving machine, the combination of a continuously-operative driving mechanism, including a reciprocating driver and a continuouslyrunning shaft which gives motion to the driver, a fixed nose piece through which the tacks are driven, a tackfeed raceway arranged to guide tacks to the driving mechanism, a slide or gate normally in position to prevent the passage of tacks to the driving mechanism, slide or gate operating mechanism organized to stop automatically after moving the slide or gate to feed one tack, a pulley contiguous to the base of the machine, a connection between said pulley and the said continuously-running shaft, whereby the pulley is continuously operated, a clutch normally separated from said pulley, a clutch-operating lever arranged to be moved by the foot of the operator, wherebythe clutch may be engaged with the pulley, a shaft engaged with and rotated by the clutch, a vertically-movable work-supporting jack, and mechanism operated by the rotation of the clutch-operated shaft, whereby the jack and the tack-feeding slide or gate are set in operation successively by a single movement of the clutch-operating lever, said mechanism including a connecting-rod R adapted to transmit motion from the clutch operated shaft and make the slide or gate operating mechanism operative, as set forth.

5. In a tack-driving machine, the combination of a continuously-operative driving mechanism, a normally-inoperative tack-feeding mechanism, a continuously-running pulley, a clutch adapted to be engaged with the pnl-' ley, a clutch-operating device controlled by the operator, a starting device for making the said tack-feeding mechanism operative, and connections between the pulley and starting device, whereby the latter is operated during the engagement of the clutch with the pulley, said connections comprising a shaft engaged with and rotated by the clutch, and a conmeeting-rod adapted to communicate motion from said shaft to the starting device, as set forth.

6. In a tack-driving machine, the combination of a continuously-operative driving mechanism, a normally-inoperative tack-feeding mechanism, a continuously-running pulley, a-

' clutch adapted to be engaged with said pulley, a clutch-operating device controlled by the operator, a vertically-movable work-supporting jack, a starting device for making the said'tack-feeding mechanism operative, and

mechanism operated by the engagement of the clutch with the pulley, whereby the said jack and starting device are successively operated, said mechanism including a clutchoperated shaft, a connecting-rod R and devices, substantially as described, connecting the clutch-operated shaft with the jack and connecting-rod, as set forth.

7. In a tack-driving machine, the combination of a continuously-operative driving mechanism, a normally-inoperative tack-feeding mechanism, a continuously-running pulley, a clutch adapted to be engaged with said pulley, a clutch-operating lever arranged to be .moved by the operator to connect the clutch with the pulley, a shaft operated by the clutch and provided with a bevel-gear, a lever mounted to oscillate on a fixedv fulcrum and pro vided with a gear-segment meshing with said gear, a jack-operating lever mounted to oscillate on the same fulcrum with the gear-carrying lever, a jack connected with the jackoperating lever and adapted to be raised thereby, a yielding connection between the gear-carrying lever and the jack-operating lever, whereby the gear-carrying lever is enabled to move independently after the upward movement of the jack has been arrested, and connections between the gear-carrying lever and the tack-feedingmechanism,whereby the latter is made operative during the said independent movement of the gear-carrying lever and after the arrest of the upward movement of the jack, as set forth.

8. In atack-driving machine, the combination of acontinuously-operative driving mechanism, a normally-inoperative tack-feeding mechanism, a continuously-running pulley, a clutch adapted to be engaged with, said pulley, a clutch-operating device controlled by the operator, a vertically-movable work-supporting jack, a shaft H journaled in the fixed bearings at the base of the machine and provided with a gear H*, a continuously-running pulley Il, normally loose on said shaft, a clutch H adapted to connect said pulleyand shaft, a lever B R, mounted on a fixed fulcrum and having a gear-segment H meshing with the gear H, a jack-operating lever H mounted on said fulcrum and engaged at its outer end with a work-supporting jack, a yielding connection, such as a spring K between the inner end of the lever H and the lever B R, whereby the latter is enabled to move independently after the arrest of the I ment of the foot-lever to cause the jack and upward movement of the jack, the connectingrod R constituting a starting device adapted to make the feed mechanism opera- 11ve, a system of levers connecting the lever R R with the rod R whereby said rod is moved during the said independent movement of the lever R R, and a clutch-operating foot-lever adapted to cause the engagement of the clutch H with the pulley H, whereby the operator is enabled by a movethe feed mechanism to operate successively, as set forth.

In testimony whereof I have signed my 15 name to this specification, in the presence of two subscribing witnesses, on this 23d day of July, A. D. 1891.

ERASTUS WOODWVARD.

Witnesses:

FRANK G. PARKER, MATTHEW M BLUNT.

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