US2394788A - Inspection tool - Google Patents

Description

Feb. 12, 1946.

E. KUFCHICK INSPECTION TOOL INVENTOR EDM/42E /fdpC/f/C/(- www ATTORNEY Ol-EIIII Patented Feb. 12, 1946 U-Nirsa simi-Es PATENT carica.

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Edward. Kupchicl. Br ,00k ly 1 1.,`,k Nij' Yi),d assigner` to ulcvacWatch; Company, Ne,w. Yirkj,A Ya'. a; corporation of: New- YorkK f Application April 19, 194.3,..seria1iNniAaasoa t 2 claims. (ci: scr- 4er This invention relates to an instrument for facilitating the inspection of small articles and relates more particularly to a device for readily and conveniently examining cylindrical watch parts such as bearings or jewels.

In the manufacture of certain instruments such as watches each part must be carefully inspected, certain watch elements such as jewels being of minute dimensions and diiiicult to handle. Usually these parts were inspected by holding between the jaws of a tweezer and turning the tweezer as a whole in the hand to bring the different portions of the part into convenient view. Considerable diculty attended this procedure often resulting in failure to make a proper or complete inspection.

In accordance with the present invention a tool is provided whereby the part to be inspected may be readily picked up and rotated in the line of vision of the inspector whereby a complete and eiective examination of the part is quickly and conveniently accomplished.

The invention comprises a springarm tweezer so constructed and arranged that a part grasped between the jaws may, by a movement of one of the jaws, be rotated forward and backward along the surfaces of the jaws thus permitting a full inspection of the part. In the case of a watch jewel the aperture or bearing is conveniently disposed in full view of the inspector and the entire surface of the bearing may be readily examined. Furthermore any variation of the cylindrical surface of the part under inspection is discernible during the rotation of the part between the jaws.

The objects and advantages of the invention will be more clearly understood by reference to the following description together with the accompanying drawing, in which Fig. 1 is a perspective view of a tool or tweezers constructed in accordance with the present in- I vention;

Fig. 2 is a fragmentary view of the jaws of the tool in cross-section with a part held for in spection;

Fig. 3 is a view similar to Fig. 2 but showing the jaws in diierent positions;

Fig. 4 is an enlarged view of the jaw ends holding a part;

Fig. 5 is a View similar to Fig. 4 but showing a part held in a diierent position;

Fig. 6 is a view taken on line VI--VI in Fig. 2;

Fig. 7 is a view shown on the movable parts of one of the jaws, and

Fig. 8 is a perspective view of an instrument tively stationary jaw-part I6 and a relatively y movable jaw-part I 1.

The jaw-part I 'l consists of a nose-piece I8 and a plate portion I9 having posts 20 and '2| extending through a slot 22 in jaw-part I6., The post 20 is provided with a locking head 23 and the post 2I is provided with a knurled button or thumb-piece 24. The head 23 and the button 24 extend across the slot and hold the jaw I1 in slidable relation to the arm I4. As shown more clearly in Figs. 4 and 5 the nose-piece I8 of the movable jaw is provided with an under-cut guide-slot 25 to receive an end 26 of jaw-part I6 on arm I4. The jaw-part II may, by means of button 24, be moved forward and backward. The post 20 is positioned to serve as a stop and prevent the end v26 from leaving the slot 25. The jaw-part I'I may be reciprocated relative to the surface 2`I of the jaw I I.

' It will be noted that the end 28 of the jaw II1 extends beyond the nose I8 of the jaw-part I1 when the latter is in what may be termedl its retracted position ready to receive a part to be inspected. The part to be examined, such for example as a cylindrical object 29 shown in Fig. 8, is picked up when the jaws are in position as shown in Fig. 2.

The article may then be inspected'and during inspection it may be rotated by a force applied to the button 24. This causes the jaw-part II to' move to position as shown in Fig. 3 during which movement the part 29 is rotated between opposing surfaces 2'I and 30 of the jaw I I and jaw-part I'I.

The jaw-part II may be readily reciprocated to cause a rotation of the part, first in one direction and then in the opposite direction. The part may thus be completely and effectively inspected and quickly released by the operator permitting the spring arms to separate the jaws.

One of the advantages of the present tool is in making it possible for an inspector to readily pick up a small part in the same manner as followed with the ordinary tweezer.

Thus by reason of the present invention a more positive and complete Ainspection of small parts is possible with a minimum amount of effort and v A l time.

Although a preferred embodiment of the inl Vvention is shown and described herein, it is understood that modifications may be made therein Without departing from the spirit and scope of i the invention as set forth in the appended claims.

What is claimed is: l 1. A tool for holding a cylindrical workrpart,

l for inspection comprising a pair of resilient arms normally held in spaced relation, a xed jaw at the end of one of said arms to provide a surface to engage a work part, a second jaw positionedy on,

the other arm comprising a plate member to provide another surface to engage said work receiveV an end of said last mentioned arm, a

means extending through said longitudinalV slot for holding said plate member in slidable relation to said first mentioned jaw and a nger piece for moving said plate member to change the rela.- tive positions of said surfaces to rotate said work f part.

posed unidirectional surface to engage said Work 15 Y part, saidY plate member having a guide slot toV l 1 longitudinal slot in said last mentioned arm, i

part,v means for slidably mounting said second straight jaw on the other ofrsaid arms, a nger piece for `,moving said second jaw relative to said fixed jaw'to rotate said part through a straight path for inspection.

1 v EDWARD KUPCHICK.

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