US505050A - Heel-burnishing machine - Google Patents

Description

0 H. M. LO OMER. HEELBUBNISHING MAGHINE.

2 Sheets-Sheet 1.

(No Model.)

NITED. STATES PATENT OFFI E.

HENRY M. LOOMER, BOSTQNyMASSACHUSETTS, ASSIGNOR TO 'TI-IETAPIJEY MACHINE COMPANY, OF PORTLAND, MAINE.

HEEL- BURNISHI NG MACHINE.

SPECIFICATION forming part of Letters Patent No. 505,050, dated September 12 Application filed February 10, 13 2. stain No. 421,037. (No model.)

To all whom it may concern:

Be it known that I, HENRY M. LOOMER, of.

Boston, county of Suffolk, State of Massachm setts, have invented an Improvement in Heel- Burnishing Machines, of which the following description, in connection with the accompanylng drawings, is a specification, like letters and figures on the drawings representing like parts.

This invention is intended asan improvement on that classof heel burnishin g machines wherein a vibrating arm provided with a piv-.

oted burnishing tool is made to oscillate about the heel of a shoe, the tool bearing on theheel and burnishing the samefrom its heel-seat to its tread end, the jack carrying the shoe'in the meantime being moved in thedirection of the length of the heel.

In my invention I have provided improved means for keeping the tool against the heel during the vibrations of the arm carrying the same; and I have devised means whereby the burnishing machine embodying myinven tion;

Fig. 2, is a rear end elevation of the machine shown in Fig. 1; Fig. 3, a front end elevation; Fig. 4, a detail from the rear side ofthe machine shown in Fig. 1 chiefly to illustrate devices instrumental in imparting to the jack a movement to carry the heel under the burnishing tool. Fig. 5, is a section in the line 00 Fig. 4; Fig. 6, a longitudinal horizontal section in the dotted line through the rod g, Fig. 1. Fig. 7, is a sectional detail of'theparts mounted on the stud B. Fig. 8, is a detail of one of the clamps to show the dog within it, and part of the jack rod. Fig. 9, is a modification of my invention. Fig. 10 shows a modified form of sector. I

A represents the frame work of any suitable shape to support 'the working parts. i

The main power shaft A, which may be ro-.

tated from any suitable source, has fast upon it three pulleys A A A, the pulley A receiving a cross-belt A which surrounds and rotates a pulley B, loose on a stud B to be described. The pulley A is surrounded. by an open belt A extended over va pulley A having a crank pin A said crank pin receiving upon it a connecting rod A joined by a pm A to an outwardly extended arm of a lever 0 having as its center of motion the stud B referred to. The upper end of the lever O, as shown best in Fig. 2, has ears between which is placed part of a lever O, a pin 0, pivoting the lever. 0 upon the lever 0. As represented the lever C is a sort of threearmed lever, one arm as stated being pivoted at::, another arm beingjoined by a pin 0' to the. eccentric strap? 61 surrounding an eccentric 15, connected to andforming part of the pulley B, the said eccentric and pulley being freely rotated on the stud B, and in its rotation causing the lever C to be moved about its pivot or point of oscillation 0 several times during each rotation of the crank pin A The upper arm 0 of the lever 0 preferably round, is made to engage a sector D in such manner that the lever moves the sector in unison with it, the joint between the lever and sector being a ball-joint. In practice, however, this invention is not limited to the particular shape of the lever G or its particularform of connection with the sector, so long as the jointloetween the lever and sector is of the nature ofa universal or self-adapting joint. Neither. is my .invention limited to the exact shapeshown for the sector, nor to the exact point at which the lever joins the sector or its equivalent. The function andpurpose of this sector are to hold the ends of straps d which are suitably connected thereto, preferably by plates 3, having screws 4:, the opposite ends of the strap being passed about a drum D on an oscillating shaft D so that as the sector is reciprocated in the direction of its length, it will through the straps oscillate the shaft D This invention is not to be limited to the use of two straps, as it will be obvious that a single strap or cord might be made to perdicated in the modification Fig. 10, and the drum D with teeth.

The sector D herein shown is pivoted or oscillated about the stud B. In the present instance, however, of my invention, wherein I have seen fit to depend upon a flexible connectlon between the sector and drum, I have combined with the ends of the straps, takeup studs D which are split to receive the ends of the straps, the rotation of the takeup studs stretching the straps, the blocks 3 being compressed against the straps on one side, while the take-up studs bear against their other sides.

The oscillating shaft D has fast upon it the block E having earse between which by a pin e is pivoted the arm E provided at its free end With the burnishing tool 6 it being of any usual or suitable construction. The arm E has suitably connected with it a link fwhich is attached by pin f to two linksf f constituting a toggle lever, the linkf being pivoted atf upon a part of the block, while the link f is pivoted atf upon a collar f surrounding a shaft g also surrounded by a spring 9', see Fig. 6, the latter acting normally to move the shaft in such direction as to cause the pivot f 5 to approach the pivot f thus holding the toggle lever f ,f in such position that bythe said lever and linkfthe tool will be kept in contact with the heel h being burnished, the force of contact of the tool against the heel being thus determined by the spring g. It will be also noted that when the arm E is lifted away from the work sufficiently to cause the pivotal point or jointf to pass below the line of the two pi votsfflf the said arm will be held in its elevated position.

I have provided, see Fig. 6, a nut g by which to regulate the effective force of the spring g according to the work to be done. The pulley A on the shaft A by the belt h over the pulley 71 rotates the shaft 71. it in practice having a worm it, see Fig. 4, which engages a worm toothed wheel 72. provided with a cam-groove it represented as of heartshape, said cam-groove receiving a pin it of a radius bar 72 pivoted at h, the said radius bar having jointed to it at h a latch 72. shown best in Fig. 1, the outer end of the said latch being suitably shaped to engage a projection 71 forming part of the sleeve h to which jacks m and m are attached, best shown in Fig. 3, two such jacks being preferably used in order that while the heel of one shoe is being burnished, the operator may either remove from the other jack a shoe the heel of which has been burnished, or apply to the said jack a shoe, the heel of which is next to be burnished. The projection 71 is of such shape that it may be engaged by the latch of whichever jack is uppermost. The sleeveh is adapted to be reciprocated and oscillated on a suitable guide or support 71,

The frame work of the machine is provided with a guide m between the sides of which that the heel being acted upon by the tool will be moved longitudinally under the tool.

In practice it is the more common to commence burnishing the heel when the jack is to the right viewing Fig. 1, the jack being moved outwardly so that the tool commences to act upon the heel-seat end of the heel and follows down to the tread end, and during this operation for the best results the guide or track h should rise automatically to thereby insure the same uniformity of contact between the tool and heel. I accomplish this upward movement of the track 71 in the following manner:-Referring to Fig. 1, the shaft n, it being the same shaft to which is attached the Worm wheel W, has a cam 07. which acts upon a roller n at the upper end of a link n guided in a suitable box 71. and jointed at its lower end to a lever n having a suitable pivot as at n, the opposite end of the said lever being shaped to engage the lower end of the vertically moving slide n which carries the track 72. referred to, a spring a in this presentinstance actingto keep the rollern against the cam n. The sleeve 72 has suitably pivoted upon it suitable latches 10, 12, which are adapted to engage respectively with the projection 13 forming part of or extended from the vertically moving slide M, the said latches being solely for the purpose of retaining a jack m or m in proper vertical position so that it may correctly registerwith and enter the opening in the guide m the jack min Fig. 3 being shown in vertical position. The jack rod 0 is surrounded bya spring 0 which normally acts to retract the jack rod. This jack rod has teeth 20 which are adapted to be engaged by the teeth of a dog 21 mounted upon an eccentric 22, fast on a shaft 23, having a suitable hand-wheel 24 by which the said eccentric may be turned when desired. A spring 28 fast upon or with relation to the jack bears upon the dog 21 and normally acts to throw the teeth of the dog out from engagement with the teeth of the jack rod 0 when the eccentric is in position to retract the dog 21 to the left, viewing Figs. 1 and 8, the end of the dog when the eccentric has its point of gravity in the position to the left viewing said figures sliding by the projection 29.

In the use of these devices the shoe having been put upon the jack rod the operator will push against the outer end of the jack rod by his breast, and with his hand on the handwheel 24 will rotate the shaft 23 causing the eccentric 22 to'be moved in the direction of the arrow near it into substantially the position Fig. 8 and during such movement the teeth of the dog in engagement with the teeth of the jack rod will cause the jack rod to be moved slightly to the right to yet further clamp the heel and at the same time the dog riding upon the projection 29 will lock the jack rod and fix it in position so that it cannot be released or shaken off until the eccentric is returned. The teeth of the dog and rack are sufficiently thin to enable the jack rod to adapt itself to any thickness of heel. shaft 23 carrying the eccentric 22 has, as represented in Fig. 1, a projection 40 at or near the hand-wheel or hand devices 24, against which acts a spring 41, the latter serving normally to keep the eccentric 22 on the shaft 23, in such position as to cause the toothed end of the dog to engage the teeth of the jack rod when the latter is pushed forward by the operator the movement of the shaft 23 against the spring 41 for some little distance effecting the release of the dog from the jack rod.

While I prefer to use between the tool-carrying arm E and the spring controlled rod g,

the link system shown in Fig. 1, yet my invention is not to be limited to the precise construction of the said links which constitute jointed connections between said rod and arm. for in Fig. 9, I have shown for such purpose an elbow lever 19, pivoted at p, and an intervening link 19 Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In a heel-burnishing machine, an oscillatin g shaft, and an arm operatively connected therewith, and provided with a heel-burnishing tool; combined with a link pivoted thereto, a lever to which said link is also pivoted and a spring acting upon and to normally cause the lever acting through the link to keep the tool in contact with the heel with a yielding pressure,substantially as described.

2. In a heel-burnishing machine, the oscillating shaft, the block attached thereto, provided with a slide rod, a spring surrounding said slide rod, and a pivoted tool-carrying arm, combined with jointed. connections between said rod and arm, substantially as described.

3. In a heel-burnishing machine, the oscillating shaft, the block attached thereto, provided with a slide rod, a springsurrounding said slide rod, and a pivoted tool-carrying arm, combined with jointed connections between said rod and arm; and with means to adjust the force of the spring, substantially as described.

4. In a heel-burnishing machine, an oscil- The.

tions between said sector and shaft; a crank to effect themovement of the said sector to carry the tool from breast to breast of the heel, and an eccentric, and intermediate lever connected by a universal joint to and cooperating with the said sector to reciprocate the same during each complete stroke efiected by the crank referred to, to operate substantially as described.

5. In a heel-burnishing machine, an oscillating tool-carrying arm, a slide having a track, and a cam, and intermediate devices to raise the said slide, combined witha shoeholding jack mounted upon a track extended from the said slide, and with a cam and intermediate connections between it and the said jack to move the same longitudinally upon the said track to enable the heel to be burnished from one to its other end during the vibrations of the tool about the heel from breast to breast, substantially as described.

6. In a heel-burnishing machine, a vertically-movable slide provided with a track,

actuating devices for said slide, combined jack, and avertically movable slide on which said jack is mounted, of a lever, alink, .and a cam to move the slide and jack vertically, anda cam to move the jack horizontally on said slide bar, substantially as described.

8. In combination with heel burnishing mechanism, a yoke-like jack to hold the shoe, a toothed jack rod, a toothed locking dog and an eccentric upon which said dog is mounted to actuate the said dog and increase the holding force of the jack rod, a shaft upon which the eccentric is fast, and means to turn the shaft, substantially as described.

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

HENRY M. LOOMER.

Witnesses:

Gno. W. GREGORY, FRANCES M. NOBLE.

I oo

Images