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Publication numberUS2636971 A
Publication typeGrant
Publication dateApr 28, 1953
Filing dateJul 2, 1951
Publication numberUS 2636971 A, US 2636971A, US-A-2636971, US2636971 A, US2636971A
InventorsWilliam H. Delbrook
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electric jewel setting device
US 2636971 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

TI 5. BY

Ap 8, 1953 w. H. DELBROOK 2,636,971



Application July 2, 1951, Serial No. 234,827

1 Claim. 1

The present invention relates to a device for heating jewels for the purpose of facilitating setting of such jewels in watches and other time pieces and also for annealing and soldering watch parts.

It has heretofore been accepted practice for the purpose of watch repairing and jewel setting to employ an alcohol lamp and while such device may be satisfactory in some cases it is generally found that the heat generated by the device is too intense and that for this reason the danger is always present of bluing or even annealing the part operated upon. It is, in view of the foregoing, the object of my invention to provide a very simple and inexpensive, electrically energized hand tool which may be applied directly to the part to be heated. It is a further object to provide, in combination with such device, a jewel support or anvil which, upon applying the tool of the invention thereto, becomes heated to transmit the heat to the jewel or jewel setting placed thereon which is required to melt or soften the shellac or other thermo-plastic material used in setting the jewel. A further object of the invention is to provide an electrically energized device which may be applied directly to the watch part to generate therein the amount of heat required for annealing or soldering purposes. These and other objects of the invention, together with the many advantageous features thereof will be appreciated upon perusal of the following detailed description and by referring to the accompanying drawing in which a preferred form of the invention is illustrated.

In the drawing:

Fig. 1 shows the device of the invention manually maintained in contact with the anvil upon which a jewel or jewel setting is held supported;

Fig. 2 is a side view of the device with portions thereof broken away in order better to illustrate the interior construction thereof;

Fig. 3 is a similar view taken at right angles to Fig. 2 with a portion of the outer casing thereof broken away for the sake of clearness;

Fig. 4 is a cross-sectional end view of the device taken substantially on line 4-4 of Fig. 3 in the direction of the arrow;

Fig. 5 is a side view of the interior central member of the device; and

Fig. 6 shows one of the current conducting members of the invention.

The device of the invention in the form shown in the drawing has a general appearance of a pair of tweezers, which is held mounted within an insulating casing and to which current from a source of electric energy is applied. These tweezers are made in the form of a pair of blades I, l of suitable resilient, current conducting material, which are mounted upon a central support member 2 and held removably locked in position thereon by means of a tubular cover 3. The central member 2 is made from suitable heat and current insulating material and it is, along opposite sides thereof, recessed to form seats for the blades I, I of the device. As best shown in Figs. 2 and 5, the inner ends of these recesses are notched to provide clearance for the current transmitting conductors 6 and l and for the lumps 8 and 9 which will accumulate at the place where the conductors are soldered in position on the inner surfaces of the blades. Within the recesses of the central member and nearer the outer end thereof are provided bosses 10, II projecting from the surfaces of the recesses in opposite directions and of a size snugly to fit into perforations l2, l3 of the blades. However, if preferred, short screws may be extended through the perforations to lock the blades in position.

When the parts are constructed and proportioned in such manner, it is found that the blades of the tweezers may be pushed into the recesses of the central member, whereupon a tubular cover 3, which has previously been applied to the end of the wire cable l5, may be pushed on to the assembled parts to lock them firmly in position therein. This cover may be made from a rubber composition of the proper consistency to maintain the assembled parts firmly in position and the central member 2 should be made from a suitable current and heat insulating material. The jewel support, or anvil includes a block it of wood or other heat and current insulating materia1 upon which a thin disc I! of copper or other good current conducting material is rigidly mounted. This disc or anvil should be of a size to support thereon the jewel or jewel setting to be heated, substantially as indicated at 18, and in cases where this part is to receive heat sufiicient merely to melt or soften the composition used for setting purposes, it is required to move the pointed ends of the blades I, l into contact with the anvil and to maintain the'blades in contact with the anvil until the setting composition is sufficiently softened. The blades are then withdrawn and the jewel setting may be transferred to the watch; but in cases where greater heat is required, as for annealing or soldering purposes, the blades are applied directly to the part to be worked on and maintained in position thereon until sufiicient heat has been generated aeeaori in the part. The source of energy for these purposes may be a common dry battery IS on the proper current capacity or the current may, of course, be taken from the ordinary light circuit by cutting into the circuit a suitable transformer. This may be a more desirable arrangement in places where several workmen are employed and where each man is provided with his own heating device.

I claim:;

An electric heater for-watchpartsand jewelscomprising, a pair of resilient current conducting blades having perforations nearer the inner ends thereof, a central support member-made of resilient heat and current insulating material and lengthwise recessed on oppositesides there'- of to form seats for said blades. there, being inr said recesses at the inner ends thereof notches and nearer the outer ends of the recesses out wardly projecting bosses; fittingly engaging the perforations of the blades to lock the parts against relative longitudinal displacement, current conductors fastened to the inner surfaces of the blades and seated within said notches, and a

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2428521 *Dec 17, 1945Oct 7, 1947Phillips Petroleum CoRecovery of ethane and gasoline from natural gas
US2429039 *Nov 6, 1944Oct 14, 1947Herman BernsteinImplement for welding or the like
CH183006A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2754490 *Aug 31, 1953Jul 10, 1956Nathan SchnollElectrical contact clip and cover therefor
US2790059 *Jun 13, 1955Apr 23, 1957Zepher Mfg CoResistance soldering device and method
US2830163 *Oct 1, 1956Apr 8, 1958Munzer Arby AWatchmaker's temper removing tool
US2915732 *Jun 18, 1956Dec 1, 1959Sylvania Electric ProdElectric plug
US3413155 *Oct 6, 1967Nov 26, 1968Richard N. Freeman Sr.Glow engine starter
US4076028 *Oct 7, 1976Feb 28, 1978Concept Inc.Forceps spacing device
US4137919 *Aug 29, 1977Feb 6, 1979Erbe Elektromedizin KgElectromedical clip structure
US6343961 *Jul 18, 2000Feb 5, 2002Select Medizin-Technik Hermann Sutter GmbhConnecting plug for a medical bipolar coagulation instrument
US7775569 *May 14, 2007Aug 17, 2010Eta Sa Manufacture Horlogère SuisseTweezers and grasping system
US20120181256 *Jan 13, 2012Jul 19, 2012Ford Global Technologies, LlcWelding method and apparatus
U.S. Classification219/233, 968/666, 81/6, 968/736, 219/90, 439/480
International ClassificationG04D3/00, G04D3/04, G04D1/00, G04D1/02
Cooperative ClassificationG04D3/042, G04D1/021
European ClassificationG04D3/04B, G04D1/02B