US1147517A - Diamond-cutter's dop. - Google Patents

Description

L. LANG.

DIAMOND CUTTERS DOP.

APPLICATION FILED ocT.8, 1914.

l 147,5 1 '7. Patented July 20, 1915.

UNITED sa'rEs PATENT 'Louis LANG, or NEwYoraK, N. Y.

"DIAMOND-correas nor.y

To all/whom it may concern.'

Be it known that I, LOUIS LANG, a citizen of the UnitedStates, and a resident of the city of New York, borough of Manhattan, in the county and State of `New York, have invented a new and ImprovedDiamond- Cutters Dop, of which the following isla full, clear, and exact description.

This invention relates to a dop to be used by diamond cutters inthe cutting and polishingl of diamonds, and it has for its general object to overcome the disadvantages in the dops now commonlyv employed.

More specifically the invention has for its object to provide a novel, simple and effective means for firmly clamping the stone in the dop in such a manner that the table and two facets can be ground without requiring the stone to be unclamped and repositioned.

A further object of the inventlon 1s the provision of a novel form of universal joint between the body of the dop and its supy claims appended hereto.

In Athe accompanyingl drawing, which illustrates/one embodimentof the invention and'wherein similar characters of reference indicate corresponding Vparts in all the view's, Figure 1 'is a side viewk of the dop,

.showing the body in full lines in such relation to ,they stem as to cut the tableof `a diamond and showing by dottedlines the ltwo opposite angularI positions for cutting two diametrically `opposite facets; Fig. 2 is l .anenlarged sectional view on the line 2 2,

Fig. 1; Fig.'3 isa view of the uppersecf tion of the dop removed, the plane ofA separation being indicated by the `line 3-3, Fig. 2; Fig. 4 is an enlarged sectional view of the adjusting ring for vthe clamping hooks; and Fig. 5 is a sectional view showing the universal adjustment and clutch features in connection with a lead. dop. j

Referring tothe drawing, A designates l Specification of Letters Patent.k Application mea october s, 1914. serial No. 865,672.

` .Patented .my 2o, 1915.

the body of the dop, which ismounted for universal adjustment on a rigid stem B, the universal adjustment being provided for by a ball and socket joint C.

The dop is made preferably, although not necessarily in' an upper diamond -holdin `section a and a lower socket section a', an ythese two sections are separable on 'a plane transverse to the stem B, and they may be secured together in any `suitable manner, as, for instance, by screws 1, Fig. 2.

v The upper section4 `ai is approximately frusto-.conic'al and at its top is provided with `a tapering socket 2 'for receiving a correspending shapedV diamond-holding -c-up 3 which is removable so that it can be interchangedvwith cups of' other size, according lto the dimensions of the diamond to bek cut.

The under'part of the section a is formed with a orizontalcircular chamberfl, and a vertical passage or slit 5' extends downwardly through the center of the section A .fromthe top thereof to the chamber, the

slit or space 5 servingto accommodate the clampin hooks and 6 andtheirl actuating means. hese hooks are disposed at opposite sides of the cup 3 and theyymove inwardly and outwardly in a lateral direction with respect to the cup and also axially thereof. The lower ends of the clampin hooks are provided with longitudinal slots throughwhich extend pivot pins 8 whereby the hooks a-reymovably retainedk `in place. Engaged withy and vdisposed between the hooks Gand 6 is a U-shaped spring 9 located within the passage 5, and the tension of this spring is such that -it tends to force the diamond-engaged hooks 6 and 6 apart.

. The means for forcingthehooks laterally ltoward eachl other and into engagement with the stone and also for `drawing, the

lhooks inwardly in an axial direction forv clamping the stone in Athe cupV are the Wedges 10 and 1.0 which are employed respectively in connection with the hooks 6 and 6. These wedges slideonsurfaces 12 formedby the sides of the passage pand theyare connected with means within the section a, whereby thewedges can be .forced inwardly or outwardly. The -wedge-operating means comprisesya disk 13 which is provided with diametrically opposlte slots 14: to receive the lower ends ofthe wedges 10 and 10', and in these slots the wedges are pivotally secured by pins 15 carried by the disk 13. The circumference of the disk i is connected to the eye 20 at the central top The rear plows 25 and 26 are providedv with suitable skeleton bracings 27 on their inner sides and at their forward and rear .lower parts they have idle or casterwheels 28 and 29 which are free to swing like the wheels 8 and y12, and consequently, these wheels 28 and 29 automatically trail according to the direction in which the machine is advancing or turning. An inverted U-shaped guide frame 30 rising from the chassis 1 serves as a guide for the collars 31 which slip up and Adown thereon and to which the front portions of the plows 25 and 26 are connected by eye-bolts 32, as shown in Figs. 7 and 10. Stout coil springs 33 connect the lower corners of the plows 25 and 26 to brackets 34 on the chassis and the direction of pull of these springs is such that they hold the lower forward corners of the plows 25 and 26 in proper position. The slides 31 and eye-bolts 32 provide means iwhereby the plows 25 and 26 may be raised or lowered to any desired position, and whatever position they may assume they are adapted to be swung inwardly and outwardly in relation to the chassis 1 and further, the rear ends of the plows 25 and 26 may, by reason of thisI joint, be raised or lowered so that the general forward extent of each plow may be arranged at any desired inclination to the horizontal. Extending longitudinally of the chassis 1 is a guide bar 35 which is rigidly fastened by the braces-36. Supplemental frames 37, suitably braced, are hinged lat 38 to the upper and lower portions of the respective frames 27 and the rear ends of the respective frames 37 have swiveled or eye-bolt joints 39 and a guide or runner 40 which slides on the guide 35. The frames 37 assist in supporting the plows 25 and 26 and also constitute, with the runner 40, means whereby the two frames 27 and the respective plows 25 and 26 carried thereby, may be simultaneously swung inwardly or outwardly to vary the width of the swath cleared by the plows 25 and 26. This adjustment is accomplished by a double cable whose upper andilower stretches 41 and '42 run over a sheave 43, and one of these stretches connects to the runner 40.. The cable winds on any suitable windlass' 44 located in the same general region as the windlass 24. When the windlass is operated-in one direction, the plows 25 and 26 are spread and when operated in the opposite direction, they are drawn toward each other. For the purpose of raising and lowering the collars 31, there are provided independent cables 45 and 46 vwhich run over sheaves 47 and 48 'on the guide frame 30 and are adapted to wind on the respective windlasses 49 and 50 located in the same general region as the windlasses 24 and 44. To raise and lower the rear ends of the plows 25 and 26, I provide cables 51 and 52 connected to the plows 25 and 26, which, after running over pulleys 53 Y and 54, extend to the respective windlasses 55 and 56 located in the same general region with the windlasses aforesaid. Any suitable winding and llocking means may be provided for the windlasses. The form of windlass is not important and other winding means may be provided. v1While not essential, the braces and frame-work are pref- -erably of angle iron for purposes of lightness and strength and the guide frames 14 and 30 are of tubing.

The front plow maybe raised and lowered and held at any desired height and it automatically turns and responds to the direction of movement of the motor vehicle. Each of the rear plows can be independently raised and located at any desired height and tilted to any desired inclination. Both of the rear plows can be simultaneously moved inwardly or outwardly to cut a narrower or wider swath. However the plowsmay be. disposed, the springs 33 hold the wheels 28 and 29 down to run along the surface operated on so that the plows are held to their work. Inward pressure on the plows is resisted vby the supplemental frames 37 and the means employed to adjust them. y

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a snow plow, the combination with a vehicle, of a front plow, guides on the vchicle, hinged guide Connections thereto from the upper portion of the plow, said plow having loose connections to lsaid guides at points lower down whereby said plown is free to automaticallytiltat all times and when at any height and may be raised and lowered independently of said tilting, and means for bodily raismg and lowering said plow independently of its adaptability to automatically tilt.

2. In a snow plow, the combination with a vehicle, of afront plow, and guiding and adjusting means adapted to permit up and down movement of the snow plow and tilting movement thereof comprising upright guides on the vehicle, hinge collars on the plow which are slidable on'the guides, and forks on the plow which are slidable on the guides.

3. In a snow plow, the combination with a vehicle, of a front plow,`r guides on the vehicle, hinged guide connections thereto from the upper portion of the plow, said plow having loose connections to said guides atpoints lower down whereby said plow is and at the sides, a rotatable ring mounted in the chamber and having its erphery engageable by the thumb and ger to the open sides of the chamber, stone clamping means extending out of the top of the chamber and movable inwardly and outwardly for clamping and unclamping the stone, and a device operatively connected with the ring and with the said means for moving the latter by the rotation of the ring.

2.' A diamond cutters dop comprising a body, an operating ring rotatably mounted therein and conned against axial movement, said ring being internally threaded, a disk threaded in the ring, means for preventing the disk from turning and permitting the disk to move axially, stone-engaging clamping hooks mounted in the body,

and means connected with the disk and op-l eratively connected with the clamping hooks for actuating the latter by the movement of thesaid ring.

3. A diamond cutters dop comprising a body, an operating ring rotatably mounted' therein and confined against axial movement, said ring being internally threaded, a

disk threaded in the'ring, means for preventing the disk from turning and permitting the disk to move axially, stone-engaging clamping hooks mounted in the body, wedges pivotally connected with the disk and engaging the hooks for moving the same into stone-clamping position as the wedges move in one direction, and spring means for disengaging the hooks as the Wedges move in the opposite direction.

4. A diamond cutters dop comprising a dop body provided with a socket, the body being made in two parts screwed together and separable on a plane passing through the socket, a fixed ball disposed in the socket and on which the body is movable, a resilient lining disposed between the ball and one part of the body and subjected to compressionby the screwing of the parts of the body together, an element mounted in the ball and having a spherical surface projecting outof the same, and spring means arranged in the ball and acting on the saidelement to press the same against the lining.

5. A dop comprising a body, a stone-receiving cup mounted therein, clamping hooks movably mounted on the body, wedging means for forcingthe hooks into engagement with a stone in the cup, and means having a threaded engagement with the wedging means for operating the, same.

6. A dop comprising a body, a stonefreceiving cup mounted therein, clamping hooks movably mounted on the body, nonrotatable wedging-means located within the body for forcing thehooks into engagement with a stone in the cup, means located within the body for operating the wedging means, and means for moving the hooks out of en'- gagement with the stone when the wedging means is released from the hooks.

7. A dop comprising a body, a stone holder therein, a pair of clamps disposed at opposite sides of the holder, a rotatable element mounted within thebody and held against axial movement, and means actuated therebyl for moving the clamps into engagement with the stone.

'8. lA dop comprising a body, astoneholder therein, a pair of clamps disposed at opposite lsides of the holder, a rotatable element in the body, a non-rotating member having a threaded engagement with the rotatable element, and means connected with the said member vfor forcing the clamps into engagement with the stone in the holder.

9. A dop comprising a body, a stoneholder therein, a pair of clamps disposed atzopposite sides of the holder, a rotatable element in the body, a non-rotating member having a threaded engagement with the rotatable element, wedgeshingedly connected with the said member and engaging the clamps to force the same in engagement with a stone in the holder, surfaces on which the wedges slide, and means for releasing the clamps when the action on the wedges is removed from the same. v

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

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