US958083A - Holddown for lasting-machines. - Google Patents

Description

N. 0. BOHR.

HOLDDOWN FOR LASTING MACHINES. APPLICATION FILED APR.26, 1907. RENEWED NOV. 22, 1909.

Patented May 17, 1910.

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N. G. BOHR. EOLDDOWlfI FOR LASTING MACHINES. uruonron FILED APR.26, 1907. nnmzwnn ov. 22, 1909.

958,083. Patented May 17,1910.

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UNITED snares Parana neuron.

NICHOLAS C. BOHR, 015' BOSTON, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS, T THOMAS G. PLANT, OF BOSTON, MASSACHUSETTS.

Specification of Iletters Patent.

Patented May it, rain.

- Application filed April 26, 1907, Serial No. 370,360; Renewed Novem er 22, 1909;- Serial no. access.

To all whom it may concern:

Be it known that I, NIoHoLAs E0113, :1

' citizen of the United States, residing" at Boston, in the county of Suffolk, State of Massachusetts, have invented anlmprovement in Holddowns for Lasting-Machines, of which the following'descr'iption, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

My invention relates to lastin machines of the type known as bed mac ines and more particularly to hold-down devices for such machines. In using'this type of machine the assembled shoe is placed upon a last and then jacked, sole uppermost,'upon the machine. It is customar to provide the machine with some form 0 hold-down devicezto bear upon the sole at substantially the ball thereof and firmly clamp the shoe u'po'n the heel and toe posts to prevent vertithe sole and substantially centrally of the will brin its bearing width of the shoe, which point, it is obvious,

will change with difierent sizes or styles of shoes in its relation to a fixed part of the machine, as, for instance, the sup art for the'hold-down. In order to adapt t e holddown to this change of locat on of the proper bearing oint with relation to its support, it has een customary heretofore to mount the hold-down u on a single pivot to swing in a horizontal p an'e and so shape or crook it that its range of movement over the soles of the (various shoes to he lasted portion, with some degree 0 approximation, in proper relation to'each. It has been found in ractice, however, that the hold-down i confined to movement about a single fixed center, cannot be shaped so that its bearing portion will rest upon the be lasted.

proper point on ail shoes to The object of this invention is to improve the construction of hold-down de- To the accomplishment of this object and such others as may hereinafter appear, as will be readily understood by those skilled in the art, the invention comprises the features and combination of parts hereinafter described and claims. V

The various features of my invention will be best understood from a description of one embodiment thereof, such, for instance, as ill-ustrated'in the accompanying drawings, in which,

Figure 1' is a-front elevation of one type of bed lasting machine to which my hold down has been attached; Fig. 2 is a plan of myhold-down detached from the machine, the figure being desi ned to illustrate its relation to the sole 0 a shoe being lasted; Fig. 3 is a p'lano'fa form of bearing foot pointed out in the appended cooperating with the hold-down, a part beingin section; Fig. 4: is a side elevation of parts shown in Fig. 3'; and, Fig. '5 is a section on the line 55 of Fig. 3.

Referrin to the drawings, ,thelasting machine in connection with which I hhve chosen to illustrate my improvement comprises the parallel ties 1, which are supported by the legs 2 at thecorr'ect height for the operator and to these ties is secured at one end a suitable slidew'ay 3, in which is mountedand moves a support 4, which carries the toe fasting head T and the support .5 for the toe rest 6. To the oppositegendof the parallel ties 1, there are secured the bars 7, which form a track upon which the jacking and heel lasting mechanism is sup orted and on which track it moves to a d rom the toe rest when the machine is operated.

Mounted on the bars 7' is the heel head H,

which directly supports the heel lastingmechanism, including the heel band 8. The jackost i1 is moved toward and from the heel and by means of a hand wheei 15 and a suitable form of catch is provided to maintain the heel head H in operative position.

The toe head T is mounted for both longitudinal and tateral tipping adjustments. The former adjustment is obtained by means of the hand wheel 17, which is secured to the support a and moves the toe head about the pivot pin 18 and the tatteradjustment through ail crank 19, which oproe adjusted through similar devices.

. 32. Release spring end of which is swive ed, for

erates a worm gear 20'and' through connection with aworm wheel turns that portion of the carriage carr ing the lasting devices laterally about a ongitudinal pivot pin (not shown). The heel head is similarly The longitudinal adjustment occurs through movement of the hand wheel 21 turning the head about the pivot 22, and the lateral adjustment occurs through thecrank 23 turning the lasting devices carried by the head about a longitudinal pivot (not shown). 'Both the toe and heel heads are provided with suitable lasting devices in the form of wipers w and w and operating means therefor.

" Theparts above described are those gener-' ally found in the type of bed lastin machine known in the art as the 'ldeal lasting machine and do not need further description, since it is a type well known to those skilled in the art. 4 I'will now describe the particular features of my invention, it being understood, of course, that they are adapted for use in any appropriate char cter of lasting machine. At the back of the supporting frame for the lasting devices there is provided a lug 25, through which passes a hold-down sup porting rod 30, the upper end of which is provided with a collar 31, beneath which and surrounding the rod is a coiled spring 32 extendin between said collar and the upper end 0 the lug 25. To the lower end of the rod is attached any convenient form of treadle 33 for imparting to the rod vertical movement, depression thereof causing the rod to descend and compress the spring of the treadle will allow the 32 to act to raise the rod 30. I j The hold-down, designated generally by the letter D, is connected to the upper end of the supporting rod 30 and in the form herein illustrated com' rises an arm 35, one niovement in a horizontal plane, inany convenient manner on the supporting rod '30, and to the other end of which there is 'arti'cularly connected, as by a hinged joint 36, a second arm 37. The freeend of the arm 37 may be shaped to form a bearing foot of sufficient proportions to roperly hold the shoe in lace when the oot is with the sole, or, it may herein shown, with a separable bearing foot. Vl ith such a construction the operative is enabled to move the bearing portion of the hold-down universally in a horizontal plane, the movement being obtained, as is obvious, by reason of said bearing portion being mounted for movement about a fixed and a movable fulcrum, the fixed fulcrum herein being the hold-down supporting rod 30, and the movable fulcrum the pin 36 of the hinge 36. Thus, no matter what the posiing rod 30, of the '11 or the toe rest brought into contact be provided, as

with relation to the hold-down su'p'port' heel pin' of the jack-post of the toe'support 5, in supporting any particular size or style of tion,

shoe the operative is enabled 'to position the bearing portion of the hold-down in just the desiredposition upon the sole, that is,

substantially upon the ball thereof and midway the width of the shoe or nearer the toe,

if desired. This wide range of movement is also available in cooperation with the adjustment of shoes. With any of thehold-downs heretofore in use, provided with but a single fulcrum point, such complete adjustment was impossible, for the down support being stationary, the bearing end of the hold-down could move only in the arc of a circle. If the old style of holddown wereformedto properly rest upon a certain size of shoe and a smaller shoe were then placed in the machine, when the hold-down foot was placed in bearing position 'upon the new sole it would rest too near the instep to obtain the best versa if a larger shoe than that to which the hold-down was originally fitted were to be lasted.

It is extremely important that the pressure point of the bearing foot upon the sole be in a particularly selected position with relation to the shoe as a whole, otherwise the shoe will not be held as firmly as is desired and the lasting cannot be accomplished so skilfully, hence the appearance ofthe finished shoe will accordingly suffer. Y

The jointed hold-down illustrated, more particularly in lasting Goodyear shoes, permits the use 0 a bearing plateof sufiicient proportions to extend over substantially the entire space within the upturned'channel lip A bearing plate of such proportions aids the lasting of the shoe in that it maintains the channel lips in their proper relation to the sole at the time the wipers w are wiped in in ,the lasting operation.

To enable the jointed hold-down D to be used with.- advantage a hold-down plate, preferably of theform and construction of the plate P (Figs. 3 to 5),-is used. The hold-down plate P is made of two side plates 42, which are connected together by one or more pins 43 extending through transverse holes 44 in .the two'portions of the plate,

which pins are provided neareach end with a recess or slabbed oif portion 45.

vertically arranged, pins 46 pass from top to bottom of the plates 42, one for each recess 45. The pins 43 are prevented from escape by the projecting walls 45" outer ends of the recesses 45. Each of the holes '44 is enlarged at its inner end, in meetof the toe head for-varying styles reason that the hold-' clamping results, and vice '-at the toe portion of either a leather or a N f Gem insole.

Small,

at the r 958,088 at a ing faces of the plates 4t2, and seated in said enlargements are the ends ofcoil springs 47,

surrounding the pins 43 and'normally'maintaining the plates 42 in open relation, as shown in Figs. 3 and 5. The plate P is preferably connected to the arm 37 by a headed pin 38 extendin loosely through an opening 39 in the arm 3? (Fig. 1) to provide flexibility of action or universal rocking,

movement with respect to said arm. The connection, between the plate P and the supporting pin 38 is by means of a flange 40 on. the lower end of the pin extending at either output of the machine being thereby in-- I creased, and because of the employment of with other styles of bearing plates, as will artisan. 'Wll3ll0l1t departin scope of the actual invention as defined by thejointed hold-down, the efliciency of the machine is also increased. j Obviously, my hold-down may be used be readily understood by those skilled in the art. j 1 *While the particulars of construction herein set forth are well suited to one formof 'the invention, it is not to be understood that these particulars are essential since they ma be variously modified within the skill of the from. the true the following claims. 3

What I claim as new is port, a hold-down'arm swiveled thereon to swin horizontally, a; second arm jointed to the rst arm,-.ja bearing footcarried by the second arm, andime'ansfor moving said parts a vertically in unison.

2.1m a lasting machine, a hold-down device, and a self expanding bearing foot sustained thereby. I v

3; In'a'lasti'ng machine, the combination of a hold down fs'upporting rod, a holddown arm connected thereto to swing in a horizontal plane, a bearing foot adapted to contact with'the sole of-a shoe supported by the machine and mounted for umversal movement on ,said hold-down arm to enable the bearing foot to conform to the surface of theshoe sole, and treadle operated means for moving the bearing. foot toward and from the sole of the shoe.

4. In a-lasting machine, thecombination ofa hold -down supporting membena hold- 11. In a lastin down arm jointed thereto to swing in a horizontal plane, a second arm mounted to swing on the hold-down arm, a bearing foot, yielding connections between the second arm and bearing foot to permit the latter to adapt "itself to the sole of a shoe supported by said machine, yielding means acting nor-' mally to raise the bearing foot, and treadle operated means for moving said bearing foot toward the shoe sole.

5. In a lasting machine, the combination of a hold-down sup-portingrod, an arm mounted to swing horizontally thereon, a I

second arm mounted on the first named arm to swing horizontally with respect thereto, a bearing foot to bear upon the sole of a shoesupported by said machine, connections between the second arm and bearing foot permitting the latter to adjust itself to the shoe sole, and means for raising and lowering said parts in unison.

6. In a lasting machine, the combination of .a hold-down supporting member, a

ereby, a plurality of bearing foot having side plates 42 arranged for movement toward and from each other in substantially the plane of the work, and

the jointed hold-down arm D.

8. In a lastin 'machine of the class described, a holdown having .a bearing foot shaped to fit within and against the upturned lip on the 'soleand to bear upon an extended area of the sole face, a treadle, and

, connections betweenthe treadle and hold- V down "for operating-the latter from the for- 1. In a lasting machinea hold-down sup-- 3 9. In a" lasting machine of the class de-'.

loosely mounted for universal rocking movef ment in the-free end of said arm.

10. A holddown' device comprising i a bearing foot havin'g'separable side plates shaped to bear upon the sunface of a shoe sole Within the upturned channel lip and springs mounted in said plates and arra ed to normally maintain the same in exten ed position. I v

machine of theclass described, the combination of a hold-down supporting membema swin inghold-down arn;

sustained thereby, hol -down plates con-. 'nect'ed.to said arm, and a spring normally abtmig to separate said plates to cause them to conform to the shape of the shoe sole, and treadle means to force upon the shoe sole.

the bearing plates 12 In a lasting machine, the combination In teetimony whereof, have signefl m of a'hold-down supporting rod, a holdname to this specification, inthe presence 10 down arm sustained thereby, a plurality of of two subscribing Witnesses.

hold-down plates and connections between said plates and ar1n permitting rocking NICHOLAS BOHBQ movement of each of said plates to sep- Witnesses:

arately conform to the sole of a shoe sup- ROBERT H. KAMM ER,

ported by said machine. ROBERT D. BAXTER.

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