US469938A - Sachusetts - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. E FLINT, Jr WORK HOLDER FOR VARIETY MOLDING MACHINES.

No. 469,938. Patented Mar. 1, 1892.

v all-5:55:16 A

0., PNBTOUTHD., msummon, 0. a

(No Model.) 2 Sheets-:Sheet 2.

E. FLINTQJr. WORK HOLDER FOR VARIETY MOLDING MAGHINES.

No. 469,938. Patented Mala. 1,91892.

UNiTED "STATES PATENT OFFICE.

EDWARD FLINT, .IR., OF CAMBRIDGE, ASSIGNOR OF ONE-HALF TO CHARLES F. BROWN, OF READING, AND ARTHUR W. OROSSLEY, OF BOSTON, MAS- SAOHUSETTS.

WORK-HOLDER FOR VARIETYMOLDING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 469,938, dated March 1, 1892.

Application filed November I2, 1890- Serial No. 371,185. (No model.)

To all whom it may concern.-

Be it known that I, EDWARD FLINT, J r., of Oambridgefln the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Work-Holders for Variety Molding-Machines, of which the following is a specification.

This invention has for its object to provide a simple and effective device whereby the op- IO erator .of a variety molding-machine can present apiece of work to the cutter-head of the machine, move the workhorizontally on the table of the machine to pass the work across the cutter-head and cause the cutter-head to 1 5 make a longitudinal'groove in the work, partly turn the work after each pass of the same across the cutter, and secure it so that during the next pass another groove will be made having a predetermined relation to the last groove, until the entire surface of the work has been ornamented by a series of grooves, all separated by spaces of uniform shape, the invention being intended'to aid an operator in making longitudinal fluti'ngs on cylindrical and other shaped pieces for use as legs, posts, &c., on furniture, or diverging flutings or ribs on fiat pieces to be used as medallions to ornament mantels, furniture, &c. v

The invention consists as" a whole in a 0 work-holder comprising a base-plate adapted to be moved freely about on the table of a variety molding-machine by the operator, two vertical standards mounted on said base and adjusted both lengthwise and crosswise there- 3 5 on, a work-engaging center mounted to rotate in a bearing on one of said standards, an index-wheel affixed to said center so as to rotate therewith, a latch attached to said standard and adapted to engage the index-wheel and hold the same in various positions, and another center attached to the other standard and adapted to co-operate with the said rotary center in supporting a piece of work to be ornamented. 5 The invention also consists in certain other improvements, all of which I will now proceed to describe and claim.

In the accompanyingdrawings, forming a part of this specification, Figure 1 represents a perspective view of a work-holder embodying my invention. Fig. 2 represents a top view of the same. Fig. 3 represents a horizontal section through the index-wheel and the standard supporting the same. Figs. 4 and 5 represent views of auxiliary devices used with my improved work-holder. Fig. 4 represents a side View of the index-wheel and its supportingstandard separated from the supporting-base and secured to the device shown in Fig. 4. as a means for making radial grooves in a fiat piece or rosette. Figs. 6 and 7 represent side views of pieces of work as ornamented by the aid of my improved holder.

The'same letters and numerals of reference indicate the same parts in all the figures. 6 5

In'the drawings, a represents a flat base plate, adapted to be moved freely about on the table I) of a variety molding-machine.

c 0' represent slides, which are engaged with shoulders a a on the plate a, said shoul- 7o ders being preferably inclined or dovetailed, the slides being adjustable lengthwise of the base-plate and adapted to be secured in any position to which they may be moved by setscrews d d. V

e 6 represent standards attached, respectively, to the slides c c by screws ff, passing through slots g g in flanges formed on said standards and bearing on the slides, the standards being thus made adjustable crosswise of the base. To the standard 6 is secured by bolts h h, Fig. 8, a block or slide 1', the rear side of which is recessed at t" to re: ceive a nut j on the end of a bolt k, which is formed on a stud or center Z. and its bolt 76 are adapted to rotate, the bolt turning freely in a bearing formed for it in the slide 2'. The outer end of the center is provided with spurs Z Z, which enable it to engage one end of the piece of work m, so 90 that said piece and the center necessarily rotate' together, the other end 'of the piece being supported by a pointed stud or center at on the standard 6, said center n permitting the work to rotate freely.

0 represents an index-wheel, which is so connected with the center Z that it rotates there with, and is provided with several concentric rows or series of holes 0, each row having a different number of holes. A spring-latchp, I00

Said center having a pin 19, Fig. 2, is supported by an arm g on the slidez' in such manner that said pin may be inserted in a hole of any row in the index-wheel when such hole is brought 5 into coincidence with the pin by the rotation of the index-wheel, the latch being connected with the arm q by a screw 0', so that its end that carries the pin may swing toward and from the axis of the index-wheel, and therefore assume any position required to enter a hole in any row. The slide 2', supporting the centerl and index-wheel 0, is vertically adjustable by means of vertical slots 3 s in the standard 6, the bolts h h passing through said slots.

a plate or slide t, which is attached by bolts it 'u. to the standard c, said plate being vertically adjustable by slotse v in said standards, through which the bolts to a pass. Another slot e' in the standard 6' permits the necessary vertical movement of the center it when the plate t is vertically adjusted, the center passing through the slot v. The center at has a hand-wheel n to enable it to be convenien'tly adjusted endwise by rotation in securing and releasing the work.

In '0 crating the above-described device when t e work is circular in cross-section, like a table-leg, Fig. 6, or other like form, and

c is tob'e grooved or fluted lengthwise, the work issecu'red between the centers Z n, the endwi'se adjustment of the center or pressing the work firmly onto the spurs of the "center Z, so that said center and the index-wheel are en- 3 5 gaged with the work and necessarily rotate therewith. The work being locked in the de sired position bythe engagement ofthelatehpinp' with a hole in'the index-wheel and the base-plate resting 'Oll the table of a variety 4o molding-machine, the operator, grasping the base plate, moves the same first to bring the work in contact with the cutter head 10 (shown in dotted lines in Fig. 2) and then to cause the work to move endwise while in con- 5 tact with said cutter-head, the result being the formation of a longitudinal groove 7, Fig.

6, in the work, said groove being the first of 4 a series. The work is then turned one step, the pin p being withdrawn from the indexwheel to permit the partial rotation of the work, and then engaged with another hole to again lock the work, and the above-described movements of the work-holder are repeated, thus forming another longitudinal groove 7, and so on until the entire periphery of the piece of work is ornamented. The width of the spaces between the grooves thus formed is determined by the holes'of the index-plate, the form of the grooves being, of course, de-

termined by the form of the cutter.

lncase it is desired to form a series of radial grooves 8 in a flat piece 9, such as is shown in Fig. 7, the standard e and center n'are dispensedwith and the slide 0 is removed from the base a, said slide then constituting a base, which supports the standard e and index-wheel 0, as shown in Fig. 4". The

The center it is a screw passing through .center Z is removed and a plate 12, Fig. 4, is secured to the index-wheel in place of said center, said plate having a flat outer face and a screw stud or spur 13, projecting outwardly from said face. The piece of work 9 is attached to the plate 12 by means of said screw-stud, which enters the back of the piece. The operator locks the piece 9 in a series of positions by means of the index-wheel and latch, and after each locking moves the holder while pressing the work against the cutter-head, the resultbeing the formationof the radial grooves 8, Fig. '7. It will be seen that in either case the work may be securely held in a variety of 7 positions and presented while in any of said positions to the cutter-head.

When the machine is used as a whole, the adj ustability of the standards 6 e on the slides c c, aflforded by the slots g g andscrews ff, enables the centers n l to be adjusted laterally to adjust the center of gravity of the work and prevent the holder from tipping over when the work is of such form that its center of gravity is at one side of the center of gravity of the work-holder. The vertical adjustability of the centers Zn, afforded by the slots 1) 'v s 5, slides it, and bolts h h and u u, enable the centers to be adapted to the thickness or height of the work, while the independent adjustability of the standards 66' lengthwise of the base a enable the centers to be adapted to the length of the Work.

When long and slender pieces of work are being ornamented, I employ as a support to prevent the springing of the work at its central portion an ear or bracket 15, Fig. 5, having dovetail lugs 16 16, adapted to engage the shoulders a a of the base a. Said bracket is secured to the base about midway between the standards e e and its upper end supports the central portion of the work either by hearing directly against the latter or by holding a piece of wood or other material against the under side of the work, said piece being secured firmly to the bracket 15 by means of a screw 17 thereon.

When the index-wheel and its supporting devices are used, as shown in Fig. 4:, the plate 12 and its screw stud or spur 13 become the equivalent of the centers 1 n in holding the work in engagement with the index-wheel.

It is obvious that when vertical adj ustability is not an object the center Z and indexwheel may be mounted directly on the standard e and the center it on the standard e I claim 1. The combination of the base-plate, the slides c 0', adj ustably connected with said base-plate, the standards 6 e, affixed to said slides, the slides 'i t, vertically adjustable on the standards 6 e, the center Z, index-wheel 0, and latch 12, supported by the slide 2', the screwthreaded center n, supported by the slide t, and means for securing the slides 01 t to the standards e e at any position to which they may be adjusted, as set forth.

2. The combination of the base-plate, the

standards 6 e',supported thereby and provided with vertical slots, the slides i t, mounted on said standards and provided with attachingbolts passing through the slots in said standards, the center Z, index-wheel 0, and latch 19, supported by the slide 1', and the center n, supported by the slide 75, as set forth.

The combination of the'base-plate, the slides c 0, adjustable thereon, the standards e e, provided with base-flanges having slots extending crosswise of the base-plate, screws passing through said slots and securing the said flanges to the slides c c, said slots and

Images