US1228730A - Cam mechanism. - Google Patents

Description

K. WINKLER.

CAM MECHANISM.

APPLICATION FILED IuNE 28. 1915.

1,228,730, Patented June 5, 1917.

3 SHEETS-SHEET I.`

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CAM MEcHANrsM. APPLICATION FILED JUNE 28, I9I5.

1,228,730.. Patented June 5, 1917.

3 SHEETS-SHEET 2;

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K. WINKLER.

CAM MECHANISM.

APPLICATION FILED IuIIE28. I9I5.

- 1,228,739.. Patented June 5, 1917 3 SHEETS-SHEET 3.

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KARL VTINKLER, 0F NEWARK, NEW JERSEY, ASSIGNQR TO MQHAYK BRUSH COMPANY, A CORPORATION OF NEW YORK.

CAM MECHANISM.

Appiiycationnieu June 28, i915.

To all whom z5 may concern Be it known that l, KARL VVINKLER, a citi- Zen of the German Empire, and a resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Cam Mechanisms, of which the following is a spcciiication.

This invention relates to improvements in a cam mechanism which will find useful application in brush-makingmachines, such an embodiment being an improvement over the invention disclosed in my United States Patent llo. 1,081,709, dated December 16th, 1913. The present invention has for an object to provide means for longitudinally and laterally moving the brush-carrying table either in a reciprocating or an oscillating manner, according to the type of machine, for the purpose of drilling and filling the brush blocks, which meanswill be adjustable, so that new designs of brushes may be produced without requiring the supplying of any new parts, thereby increasing the producing possibilities of the machine without materially increasing the cost, and which will impart a more accurate movement to the table than has heretofore been possible with the known types of machines, thereby enabling the machine to produce better brushes. Another object is to produce a machine of this character which will be simple in construction and manufacture, and which improvements may be readily applied to the old types of machines at present in use.

lVith these and other objects in view, my invention vis shown in the accompanying drawings, and will be hereinafter more fully described with reference thereto, and finally f pointed out in the claims.

In the accompanying drawings,

Figure 1 is a side elevation of a brushmaking machine with my improvements incorporated therein;

Fig. 2 is a side elevation of my invention with parts broken away;

Fig. 3 is a sectional view on the line 3-3 of Fig. 2, showing one side only, the other side being identical;

Fig. 4c is a side elevation Iof a modied form of construction;

Fig. 5. is an enlarged detail view with parts broken away;

Specification of Letters Patent.

Patented J une 5, 191'?.

Serial No. 36,781.

Fig. 6 is an enlarged sectional view taken on the line 5 6 of Fig. Zl; and

Fig. 7 is a sectional view showing the application of the opening and 4closing means shown in. Figs. 1, 2 and 3 to the forni shown in Figs. l to G.

Similar reference characters indicate corresponding parts throughout the several figures of the drawings.

Referring te the drawings, and more particularly to Fig. 1 thereof, the brush machine, which is shown by way of illustration and of the well known type, comprises a table 10 and a drilling` tool 11, a tuftfilling mechanism 12 for filling the socket-holes with tufts of bristles, all mounted above a support 13. A single table 10 is shown, which is provided with the necessary clamping devices 14 for securing the brush backs in position for the drilling and filling operations.

The drilling mechanism 11 and the tuftlling mechanism 12 are both driven by a shaft 15 that receives rotary motion from a belt and pulley transmission 16, 17, from an overhead power shaft (not shown). The driving pulley 17 transmits by a connecting rod 1S reciprocating motion to a vertically guided slide-piece means of a pair of teeth 20 at its lower end the toothed circumference of a pattern wheel 21, the shaft 22 of which is supported in bearings 23 at the rear part of the supporting` frame 13, so as to impart a step-bystep rotary motion to the said pattern wheel.

On each of the side surfaces of the said pattern wheel there are provided the cam tracks 24: and 25 respectively. These cam tracks comprise a series of closely arranged pins or projections 26, which are secured into holes 27 provided in the whee. The particular course taken by these projections or pins serve with the cooperation of lever mechanisms hereinafter described to impart 19, which engages leyI to the brush-supporting table 10 the desired only necessary that a new series of holes be drilled in the sides of the pattern wheel and the pins placed into these new holes, or a pattern wheel may be supplied, in the first instance, with several series of holes into which the pins may be interchangeably placed. with a plurality of closely arranged holes, not following any particular design, in which case the pins could be universally moved about to represent any design that may be required.

Each of the said pins QG is in radial alinement with the straight surface of one of the toothed projections forming the circumference of the wheel, so that with each stepbystep rotary motion of the wneel one of the pins coincides with a fixed point on the ma chine. The pattern wheel 2l may be turned independently of the driving shaft, if desired, by a gear-wheel 93, pinion 94 and crank-handle 95, for the preliminary adjusting of the machine preparatory to starting it for work.

Slidably mounted on rollers 28 mounted in bearings $29 on the frame of the machine are the reciprocating` members 30 and 3l. Rollers f88L and 28? mounted above the said members serve to prevent upward move ment of the same. rlhe member 30 is connected by means of the levers 32 withthe brush table l0, and by its movement to-andfro imparts longitudinal motion to the table, and the member 3l is connected to the same by the levers 33, and imparts to the same a lateral movement, as is well known. Mounted on each of the said reciprocatory members are provided equalizing devices 34 and 35 secured to the same by means of screws 36. The said equalizing devices comprise opening and closing members 37 and 38 mounted between the guide-pieces 39 on the members 30 and 31. For holding Vthe said members in closed position, there are mounted between the outer ends of the same and the upstanding ends 40 and ll of the members 30 and 3l helical springs 42 and a3.

Mounted on the underside of the members 30 and 3l are provided stub shafts all, which are engaged by a bore l5 provided in the upper end of shafts 46. Ears or lugs a? and 48 are provided at each side of the said shaft, which are connected by means of links 49 and 50 to bell-crank levers 5l and 52 provided within the members 3() and 3l. The bell-crank levers are in turn connected to the members 37 and 38 by links 53 and provided within suitable recesses within the said members, so that by rectilinear reciprocatory motion of the shaft 4G with respect to the stub shaft ll, the said members are intermittently forced away from each other against the force of the springs l2 and 43.

In the upper surface of the members 37 and 38, at the adjacent ends thereof, there The wheel may also be provided are provided recesses 55 and 56, within which are provided the contact members or feelers 57 and 58. These contact members 57 and 58 are pivotally secured within the said recesses at 59 and 60, and in operative position project outwardly therefrom, being held in position by the screws 6l and 62, but when it is desired for any reason to make the same inoperative, they may be moved entirely within the recesses by loosening of the said screws 6l and 62. The ends of the said contact members, in operative position, are spaced apart a distance equal to the thickness of the pins, so that during the rotation of the pattern wheel the said pins pass between the said Contact members. The projecting portions of the said members are provided with upstanding guiding means 63 and 64:, having inner inclined surfaces, which serve to guide the pins between the contact members.

For reciprocating the shaft 4G, lhave `provided connected to the slide-piece 19 a rod G5, which engages a. trip-lever 66 pivoted to a bracket67 of the frame 13. The outer end of the trip-lever engages beneath a platform 68, upon which rests a roller 69 at the lower end of the saidishaft tG, so that each time the slide-piece operates, the platform 68 is lifted by the trip-lever, and in turn the shaft LG is lifted, opening the members 37 and 38. Simultaneously the pattern wheel is rotated one space by the teeth 20.

lt will be seen, therefore, that upon each opening movement of the members 37 and 38 a newpin comes between the contact members or feelers 57 and 58, which pin may be either to one side or the other or in the same place with respect to the previous pins, depending, of course, on the particular curve of the cam-track at that point. Assuming for instance, that the next pin is to the left of the previous pin, the contact member on the left will hit the same before the one on the right, and as the left member is prevented from further movement by theV pin, the right member by force of the springs'is drawn to the pin, carrying with it the member 34 on one side, or 35 on the other, upon which the same is mounted, and the reciprocating member 30,- or 31, as the casemay be, which in turn moves the brush table 10 either longitudinally or laterally. Should the pin be to the right of the previous pin, the action will be reversed, while should the same be in the same relative position there will be no movement of the said members. A pair of tables, upon which are provided two sets of brush blocks, are moved simultaneously, one being beneath the boring mechanism, and the other beneath the bristle-filling mechanism, so that ywhile holes are being boredin oney set of brushes, bristles are being placed 'inY the holes of the second set. Y

Iii/23 In Figs. 4, and 6,I have shown a slightly modified form of my invention, in which I have provided two pattern wheels and 71, one for imparting to the brush 'table the longitudinal movement, and the other for the lateral movement, and between the same is arranged a toothed wheel 70a, which is intermittently engaged by suitable mechanism for rotating the' said wheels step by step. In the peripheries of the said wheels are provided transverse grooves 72, in each of which are secured dove-tailed blocks 73 by means of tightening screws 7 il. The said blocks are provided with rectangular projections 75 having rounded lower corners 91, the said projections corresponding to the pins 26 of the first-described form of construction. The said blocks 73 are so arranged within the said grooves with respect to each other, as to form a cam track, the direction of which determines the movement of the brush table. n

W hen it is desired to make a new pattern, a. design of the brush is placed on the table "f and the table is manually moved, so that lthe boring device engages each hole, and at the same time the pins are placed on the pattern'wheel in the positions indicated by the movement of the levers. Each pin, as will be understood, corresponds to a hole to be bored in the brush block, so that if for any reason it is desired to make the same design of brush with less bristles, it is only necessary to further space the pins from the periphery of the wheel, so that the desired number of pins may be removed, or a section of the pins may be removed and 'the machine operated by hand across this section.

Cooperating with the said cam tracks are the reciprocating` members 76 and 77 mounted in the bearings 7 8 and 79 of the frame, and connected to the brush tables by a system of levers 80, 81, S2, and 88, 84 and 85. Grooves S6 are provided in the said reciprocating members` in which are disposed the dove-tailed blocks 87 secured therein by screws 88. Projections, or feelers 89, 9() are provided on the said block, between which pass the projections 7 5 of the cam track, the space between the two projections 89 and 90 being` approximately equal to the thickness of the projections 75. 'Ihe lower corners of the said projections 75 are rounded, as at 91, or` if desired, may be provided with small rollers, and the inner sur- .faces of the projections 89 and 90 are inclined, as at 92, to enable the said projections 7 5 to be guided between the said members 89 and 90. The projections may, if desired, be round, as in 'the first described form of construction, andmay also be rotatable. rIhe distance between the projections 75 is such that one of the said projections will be entirely disengaged from -the projections 89 and 90, before the next succeeding projection engages the inclined surfaces 92.

f- The operation of this embodiment is the same as that described with reference to the first embodiment, with the exception that there is no opening and closing action, the reciprocation of the members 76 and 77 being brought about by frictional contact of thea cam track with the reciprocating members. It will be understood, however, that either of the forms of pattern wheels may be used equally well with either of the forms of reciprocating` members. Fig. 7 illustrates the application of the opening and closing reciprocating members in the form shown in Figs. 4 to 6.

It will be seen that with the use of my improvements.I the operation ofthe brush table 1s brought about in a more accurate and expeditious manner, and any number of designs of brushes may be manufactured with the same pattern wheel by simply changing the direction of the cam track. `With the machines heretofore in use, it was necessary to employ separate pattern wheels for each form of brush manufactured, and these pattern wheels were produced at great expense and waste of time in the making, whereas with my invention the expense is entirely obviated and several hours only in time are required to change the design.

I have illustrated preferred and satisfactory forms of my invention, but it will be understood that changes may be made therein, other methods bringing about the operation of the opening and closing members, and of the rectilinear reciprocating shaft 46 resorted to, all within the spirit and scope of my invention, so that I do not wish 'to be limited to the particular construction shown, except as may be required by the claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent l. In a cam mechanism, the combination with mechanism to be operated, of intermittently rotatable means provided with a plurality of spaced retaining tracks, relatively near each other, individual means slidably engaged with each of said tracks, and adjustable with relation to each other within the extremities of said tracks, and projecting outwardly from the surface of said rotatable means, means for securing the position of said individual means to form a cam track, and means cooperating with said track adapted to be reciprocated thereby to transmit movement to said mechanism.

2. In a cam mechanism, the combination with mechanism to be operated, of intermittently rotatable means provided with an annular cam surface, a plurality of spaced grooves therein, relatively near each other,

and extending transversely of said cam surface, individual slide blocks mounted with-V in said grooves, adjustable within the eX- tremities of said grooves, and provided with projecting lugs, said lugs forming a cam track about said cam surface adapted to be changed by movement of said slide blocks, means for securing the position of said slide blocks, and means cooperating with said track adapted to be reciprocated thereby to transmit movement to said mechanism.

3. In a cam mechanism, the combination with mechanism to be operated, of intermittently rotatable means having a relatively wide peripheral surface, and provided on said peripheral surface with a plurality of spaced and transverse grooves therein, relatively near each other, individual slidable means removably secured within each of said grooves, adapted to project outwardly from the periphery ofl said rotatable means, and adapted to be individually adjusted with relation to each other, within the eX- tremities of said grooves to form a cam track, means coperating with said track adapted to be reciprocated thereby, and to transmit movement to said mechanism.

4. In a cam mechanism, the combination with mechanism to be operated, of intermittently rotatable means providedwith a plurality of spaced retaining tracks, relatively near each other, individual means slidably engaged with each of said tracks, and adjustable with relation to each other within the extremities of said tracks, and project# ing outwardly from the surface of said rotatable means, means vfor securing the position of said individual means to form a cam track, and means cooperating with said track adaptedto be reciprocated thereby,

Copies of this; patent may be obtained forve cents each, by addressingy the Commissioner of Patents,

and comprising a slidable member, opening and closing members carried thereby, means for opening the said members simultaneously with the intermittent movement of said rotatable means, means for closing the members between the movements of Vthe said rotating wheel, spaced guiding means carried by the said opening and closing members, the spaced projecting means of the cam track adapted to intermittently engage between the said guiding means upon opening of said members, the said guiding means adapted to engage said projecting means upon closing of said members, the relative positions of the said projecting means causing corresponding reciprocatory motion of said slidable member, the movement of said slidable member adapted to transmit movement to said mechanism.

5. In a cam mechanism, the combination with mechanism to be operated, of movable means provided with. a plurality of spaced retaining tracks, relatively near each other, individual means slidably engaged with each of said tracks, and adjustable with relation to each other within the extremities of said tracks, and projecting outwardly from the surface of said rotatable means, means for securing the position of said individual means to form a cam track, and means cooperating with said cam track adapted to be moved thereby to transmit movement to said mechanism.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

KARL VINKLER.

Witnesses:

Jos. BISBANE, F. Hoes.

Washington, D. C.

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