US1054631A - Machine for making temples for spectacles. - Google Patents

Description

R. M. WESTON. MACHINE FOR MAKING TEMPLES FOR SPECTACLES.

APPLICATION FILED JUNE 29, 1911.

Patented Feb. 25, 1913.

5 SHEET8SHBET 1.

R. M. WESTON.

MACHINE FOR MAKING TEMPLES FOR SPEGTAOLES. I

APPLICATION FILED JUNE 29, 1911.

1,054,631. 'Patented Feb. 25, 1913.

5 SHEETS-SHEET 2.

R. M. WESTON. MACHINE FOR MAKING TEMPLES FOR SPBOTAGLES.

APPLICATION II-LED JUNE 29, 1911.

Patented Feb. 25, 1913.

5 SHBETS-SHBBT 3.

R; M.WESTON. MACHINE FOR MA KING TEMPLES FOR SPEGTAOLBS.

APPLIdATION FILED JUNE 29. 1911.

Patented Feb.25.1913.

5 SHEETS-SHEET 4.

l rainfin We??? 9 & racy W #W R. M. WESTON;

MACHINE FOR MAKING TEMPLBS FOR SPEGTACL'ES. A PPLIGATION FILED JUNE 29, 1911.

1,054,631. Patented Feb. 25, 1913.

5 SHEETS-SHEET 5,

line l i-14 of Fig.

arren STATES PATENT o ion BALiPI-I M. WESTON, or soornnamen, MASSACHUSETTS.

MACHINE FOR MAKING TEMPLES FOR SPEC'FAGLES.

Specification of Letters Patent.

Patented Feb. 25, 1913.

Application filed June 29. 1911. Serial No. 636,064.

To all whom it may concern Be it known that I, RALPH M. WEs'r0N,.. a citizen of the United States, residing at Southbridge, in the county of orcester and State of Massachusetts, have invented a new and useful Machine for Making Tem' ples for Spectacles, of which the following is a specification.

This invention relates to a machine particularly adapted for making temples for spectacles but capable of use in any case in which a comparatively long, thin blank like a wire is reduced and-expanded and provided with an enlarged end.

The principal objects of the invention are to provide simple and convenient means for holding the blanks; to provid'e'means for taking the blanks therefrom and feeding them lengthwise into contact with the metal working tools to provide for operating said feeding means so as to alternately advance and withdraw the blank; to provide means whereby when the ,blank has been fed through to a certain point, the feed will be stopped; and especially to provide .an improved form of rotary tool-holding device capable of acting on the blank by means of a plurality of pairs of ra'dially reciprocablejaws, each movable in a very simple way into and out of working position.

The invention also involves improvements in details of construction as will'a-ppear hereinafter.

Reference is to be had to the accompanying drawings in which Figure 1 is a side view of amachine constructed in accordance with the principles of this invention. Fig. 2 is a longitudinal sectional view on enlarged scale along the center of the die holding elements and their operating devices. Fig. 3 is a sectional view on the line 3-3 of Fig. 2. Fig. 4 is a sectional view on the line 4..-l of Fig. 21 Fig. 5 is an end View of the parts shown in Fig. 2. Fig. 6 is a similar view of a detail. Figs. 7, S, 9, 10 and 11 are diagrammatic views showing the progress of the finishing operation as performed by this machine. Fig. 12 is a central longitudinal sectional view of the feeding device. Fig. l is a plan thereof. Fig. 14 is a transverse sectional view of the feeding device on the 12. Fig. 15 is a plan of the magazine, an Fig. 16 is a side view of the same.

.ceiving a circular series of rollers 16.

The invention is shown in the form of a machine embodying a frame 8 having a reservoir 9 for receiving oil and shavings "from the work. The frame has a bearing 10 for a main hollow spindle 11, which is provided with a pulley 12 for receiving power from any desired source.

Concentric with the spindle is a stationvary head 13 having a face-plate letthereon and provided with a roller cage 15 for reface-plate covers the front ends of the rollers'and they project inwardly slightly beyond the innerboundary of the cage. The head is providedwith a recess in which is located an enlargement 17 of the spindle. Arranged to slide in radial slots in this enlargement are a series of dogs 18. Four of these are shown in the drawings. Each dog is located behind a dog plate 19 which has slots 20 through which it is held by screws so that the dog can move radially but is kept in guides. For the same purpose each dog plate is provided with a pin 21 adapted to enter a recess 22 in thedog. These dogs are provided with rounded surfaces at their ends which are engaged by the rollers during the rotation of the spindle so as to cause the dogs to reciprocate in the slots. These dogs, it will be observed, are mounted in pairs, the two dogs of each pair being arranged opposite each other, and as the roll-' forced inwardly simultaneously.

The

Adjacent to the dogs of each pair are.

sets of pivoted wedges 23 and 24. These wedgesare adapted to operate two wedge blocks 25 and 26 which in turn push in'the dies 27 and 28.

It will be observed that the wedges 23 and 24 are arranged in pairs like t-hedogs and dies. These wedges are reciprocable, each pair beingmovable independently of the others. The two pairs of wedges are operated by similar pairs of slides 30 and 31 movable longitudinally in slots along the spindle 11. It will be observed that the pushing of either pair of wedges out to the right in Fig. 2 will force: the corresponding pair of dies radially inwardly into operative position. These slides are operated by a pair of collars 33 and 3%,respectively, one

for the breaking down and the other for the disk.

from the feed screw.

finishing dies 24. These are secured to the slides and are provided with grooves in which work operating fingers 35 and 36 which are mounted on heads 37 slidably mounted on a guide 38. Each head has a roller 39. These heads are operated from a shaft 40, worm wheel 11, cam shaft 42, and two cams 43, one for each roller 39. These cams positively force the slides, and consequently the clutches, inwardly to the right but they are drawn back yieldingly by springs 44:. The cams are not shown in detail butv they are so arranged that when one pair of avedges is in working position, the other is drawn back so as to bring the dies back to inoperative position.

In operation the work is received between the dies as will be explained hereinafter. The feeding of the Wire blanks to these dies according to the machine illustrated will now be described.

On the shaft 42 are located a pair of cams 45 and 46 shown as mounted on a single The cam periodically operates a roller bearing arm d7 on a short shaft 48 and oscillates a gear segment 49-011 this shaft. This gear segment meshes with a pinion 50 loosely mounted on a shaft 51.

This shaft is supported in hearings on a frame 52 located on a base 53 which constitute the magazine frame. The shaft is provided with a collar thereon having a springpressed pin 54 engaging a ratchet tooth or teeth on a head 55 on the pinion 50. This is for the purpose of permitting the pinion to rotate the shaft in one direction and to rotate back without rotating the shaft. To prevent rotation of the shaft under the latter circumstances and prevent its rotating too far in the forward direction, an adjustable friction screw 06 is used.

011 the shaft51 is a feed-screw 57 located between guides 58; .The blanks A are intended to be placed on'this screw crosswise and the intermittent rotation of the shaft 51 feeds the blanks forward laterally and keeps one end against one of the guides For each rotation ofthe shaft 42 the shaft 51 is rotated one revolution and carries a blank substantially a distance equal to its own diameter.

The cam 46 operates a roller ()0 on a reciprocating elevator slide 01 which moves up and down past the end of the guides. This slide is provided with a transverse notch 62 for receii'ing one blank, at a time fore, that on each rotation of the shaft 42 a blank is fed into the notch (32, and innnediately thereafter the slide is raised So as to bring the blank up in position to be fed forward in a manner that will he described hereinafter.

Mounted on the shaft 42 is a rotary drum having a cam groove 71 therein. Above It will be seen therethis on a frame 72 is supported a slide 73. This slide is provided with a fixed axial pin 74 on which is a fixed collar 75 against which rests an extension 76 on the slide. This extension is provided with a pin 77 and roller 78, the roller entering the groove 71. A spring '79 normally holds the extension 76 against the collar 75 so that the positive motion of the roller forward or'back will also more the slide 73 except when the spring 79 is caused, to contract, as will be explained hereinafter.

Wounted on. the slide 73 is a transverse shaft 80 having a hand wheel 81 for turning it and provided with an elliptical operating piece 82. On this shaft is an arm 83 for operating it and on the drum 70 are pins 81 and 85 for operating this member as the drum rotates. The contact of this arm 83 with the pin 8 1 turns the shaft into the position shown in the drawing, in which the elliptical melnber 82 is arranged crosswise. Its contact with the other pin swings it around ninety degrees into a position in which it is arranged longitudinally. In the latter position it engages a plunger 86 and pushes it forward. This plunger bears on the end of an adjustable rod 87 moving with the head 88 to the left in the drawings and releases the jaws so that they cannot grip an article at their ends.

Between the jaws is a centrallongitudinal pin 94 adjustably mounted on a stud 95 secured in the plunger 92,'and secured in adjusted position by a screw 96. This pin determines the position of a blank in the jaws. On the motion of this feeding de- \ice the jaws grip a blank held in the notch 02, said notch being in elevated position, to feed it forward to a tool mounted on the spindle 1]. l

\Vhen a piece of work has been operated upon throughout its length, it is brought into the central passage in a bushing'99 on the end of the spindle and then it engages the end of a rod in the passage in the spindle. This rod slides through a bushing 101 and is provided with a head 102. When it is forced ontby the work it engages a spring 103 which is held by a screw 104.

This causes the spring to make a contact means of screw 107. The screw 105. isa

justable as well as the bracket 'so that the device can be arranged with this electrical contact to be made at the proper time for operation with work of any desired length. When the electrical contact is made it causes the current to flow through an electromagnet 108. This attracts an armature 109and disconnects a notch in the latter from a fixed hook 110 which normally held the armature opposite the core of the magnet in opposition to the action of a spring 111. Now the spring acting on a bell-crank 112 pulls the armature over (toward the bottom of the sheet in Fig. 14) and swings the bell-crank, thus pushing in a plate 113. This plate has a cam 114 connected therewith whichis pivoted on a stud 115. It engages a plate 116 adjustable on the slide 73 and binds the latter so that it is no longer capable of moving. Now the'further rotation of the drum 70 simply acts to move the extension 76 in opposition. to, or with, the spring 79 without transmitting its motion to the slide 73 so that the making of this electrical connection stops the feed, although it does not stop the main shaft. The cam 17 restores the latch. In the description of the elements so fa given, the shape of the cams is not described in detail and it is not necessary to specify their particular formsand relative arrangements. It will be sufficient to say that they are so designed as to cause the mechanism to move in accordance with the diagrammatic Figs. 7 to 11, inclusive. The operation of the machine will be described broadly, therefore, in view of these figures;

Fig. 7 shows the blank A'in the form in which itis supplied to the machine, gripped at one end by the jaws 93 and forced between the breaking down dies 27 until its end enters the end of the passage in the bushing 99. This centers the work. i Now one of the cams 43 acts to force the-collar 33 to the right and with the wedges 23. This brings the dies 27 into engagementwith the work so that as the spindle rotates, the dogs alternately come into and out of contact with the. -r,ollers-16 and act on the blank as shown in Fig. 8. Then the work moves his completes finally is drawn back to the left until it is pushed all the way through, Fig. 11 shows this last operation partially completed. At the end of this operation the end of the work; that is, in the present case a temple, engages the rod 100, makes the electrical connection and stops the feed; It will be seen, therefore, that the various operations required for forming an article with a re duced shank and an enlarged end, as for 'example, an eye-glass temple, is made by this machine 1n a very efiicient and expeditious manner, the temple being securely held at all times and the entire operation of the machine being automatic.

\Vhile I have illustrated and described a preferred embodiment of the invention, I am aware that many modifications can be made in each of the several parts thereof without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited to all of the details of construction herein shown and described, but

What- I do claim is: I

1. In a device of the character described, the combination of a rotary spindle, a stationary head concentric therewith, a plurality of sets of radially movable dies carried by the spindle, dogs movable radially for operating said dies, means on the head for operating-the dogs intermittently as the spindle rotates, a series of wedges for transmitting .mot-ion from the dogs to the dies, and means for moving one set of wedges longitudinally intooperative position and simultaneously moving another set of wedges out of operativeposition.

2. In a device of the character described, the combination of a rotary spindle, a spindle head concentric therewith, a plurality of sets of. (lies carried by the spindle, an equal number of dogs for operating said dies, means on the head for operating the dogs as the spindle rotates, a series of wedges for transmitting motion from the dogs to the dies, and means for moving said wedges into and out of operative position, said dies having surfaces thereon adapted to move the inoperative dies back out of the way,

3. In a device of the character desdribed, the combination of a recipr'ocatory slide, a rotary'drum for reciprocating it, a pair of jaws on said slide, and means operated by said drum during its rotation for causing said jaws to open and close.

4. In a device of-the character described,

the combination of a reciprocatory slide, a

pin extending therefrom, a spring on the pin, an extension of the slide located on the pin and normally held at a distance from the slide by the spring, means for reciprocating said extension, a plunger on the slide having a head thereon provided with oppositely slanting sides, a pair of jaws on the slide in position for said head, to engage them, whereby when the head isdrawn back so that the broader portion thereof will enin position for said head to operate them,

whereby when the head is moved to one extreme position saidjaws will be closed, a spring for normally forcing said rod back, and means for positively forcing said rod forward to open the jaws comprising a transverse shaft, an elliptical cam on said shaft in position to engage said rod when arranged longitudinally, an arm 011 the shaft, and a movable member for reciproeating the slide having means for turning said arm and shaft.

7. In a feeding device, the combination of a magazine comprising a guide, a screw parallel with the guide, means for intermittently rotating said screw, whereby blanks located in the threads thereof will be fed forward one end of the screw, an elevating means at the end of the screw for receiving blanks therefrom, a gear on said screw, a segment for operating the gear, a ratchet for connecting the gear with the screw, and means for oscillating said segment.

8. In a machine of the character described, the combination of a rotary spindle, a plurality of dies mounted on the spindle and movable thereon, dogs in line with the dies, sets of wedges between the dogs and dies, slides longitudinally movable on the spindle and engaging the wedges, and means for reciprocating the slides whereby one set of wedges are removed and another set are engaged.

-9. In a machine of the character described, 7

the'romhination of a rotary spindle having a plurality of dies mounted thereon, opposite sets of slides reciprocably mounted in the spindle and means for reciprocating the sets of slides simultaneously in opposite directions.

10. In a machine of thecharacter described, the combination of a rotary spindle having a plurality of dies mounted thereon,

opposite sets of slides mounted in the spindle, collars securing each set of slides, and means for simultaneously driving the collars in opposite directions.

11. In a machine of the character described, in combination with a fixed head having a roller cage thereon, a single rotary spindle having a plurality of dogs and dies of equal number mounted and movable thereon, the dogs being arranged in sets, means for rotatingthe spindle and tra1.s mitting mot-ion through the dogs to the dies and means for simultaneously releasing one set of dogs and engaging the other.

12. In a machine of the character described, the combination of a reciprocal work slide, an extension'of said slide resiliently separated from the main slide, a projection on the extension, a cam drum engaging the projection, and means to rotate the drum and reciprocate the slide.

13. In a machine of the character-described, the combination of a reciprocating scribed, the combination of a reciprocating work slide having operable jaws, a cam on the slide, a drum, means on the drum adapted to engage the cam and a spring to close the jaws after the pin on the drum disengages the cam.

15. In a machine of the character described. the combination of a reciprocating work slide having operable jaws, a cam on. the slide, a rod engaging the cam and the jaws, a revolving drum, and means on the drum adapted'to engage the cam to open the jaws at determined periods.

16. In a machine of the character described, the combination of a magazine feed table comprising a single revolving screw, guides adjacent the screw, threads on the screw adapted to contain the stock to be transferred thereby, an elevator adapted to remove a single piece of stock from the threads and a cam adapted to operate the elevator.

17. In a a machine of the character described, the combination of a magazine feed table comprising a single revolving screw, guides adjacent the screw, threads on the screw adapted ti, contain the stock to be transferred thereby an elevator adapted to remove a single piece of stock from the threads and a cam for releasing the elevating means to return it to its normal position below the line of the stock in the screw.

18. Ina machine of the character described, the combination of a magazine feed table comprising a single revolving screw, guides ad acent the screw, threads on the screw adapted to contain-stock" to be transferred thereby and an elevator adapted to remove each successive blank from the threads.

19. In a machine of the character described, the combination of a magazine feed table comprising a single revolving screw, guides adjacent the screw, threads on the screw adapted to contain stock to be transferred thereby an elevator adapted to re move each successive blank from the threads and means for revolving the screw intermittently in one direction, whereby the stock will be successively conveyed to the elevator.

20. In a machine ofthe character de' scribed, the combination Wltll a revolvlng to change the-dies in the head at suitable intervals, work feeding means, a drumon the shaft directly operating the Work feeding means, work grasping means, means on the drum adapted to operate the Work grasping means, a magazine supply operated by the shaft, an elevator operated by the shaft to position the work in the grasping means, an electrical stop gear to positively stop the advance of the feeding means when the work has reached a predetermined length, and means for releasing the stop gear. p

In testimony whereof I have hereunto set my hand, in the presence 'of two subscribing witnesses. RALPH M. WESTON. Witnesses REGINALD H. lVATERs, PAUL T. TRUEMAN.

Copies of this patent may be obtained for fiv e cents each, by addressing the Commissioner of Patents,

Washington, D. C.-

Images