US1065637A - Micrometer-gage. - Google Patents

Description

J. TAGUE.

MIGROMETBR GAGE.

APPLICATION FILED 0013, 1912. 1,065,637, Patented June 24,1913.

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MIGROME'IER-GAGE.

Patented June 24, 1913. Application filed. October 3, 1912. Serial No. 723,732.

1,065,637. Specification of Letters Patent.

when is turned, draws the stem 10 and To all whom it may concern:

Be itknown that I, JAMES TAGUE, a citithus imparts movement to the jaw 6. The zen of the United States, residing at Chistem is preferably formed integral with the cago, in the county of Cook and State of jaw 6. The opposite ends of the opening Illinois, have invented certain new and use- 14 have reduced portions 16 through which ful Improvements in Micrometer-Gages, of are visible graduations 1.7 on the stem 10, which the following is a specification. Said graduations being next to the ends of The gage which is the subject of the presthe threaded portion of the stem. The nut ent invention is designed more particularly 13 also has a graduated surface 18 at each for articles of more or less uniform dimenend. The movement of the jaw 6 is limited sions for the purpose of gaging the same by a transverse pin 19 passing through the to exact dimensions. shank 7 and through a slot 20 in the reduced It is the object of the invention to provide jaw portion 9.

a gage of the kind stated which is simple in The gage is designed to measure .050 of construction and capable of a fine adjustan inch each way from a point called the 'ment in order to obtain accurate results. center or middle, the total range being there- These objects are attained by a combinafore .100 of an inch. Hence, the gage, taktion and arrangement of parts to be'hereining work that approximates said center or after described in detail and claimed, refmiddle, can size up the work Within .050 of 5 erence being had to the accompanying drawan inch each way. The graduated portions ing in which of the stem 10 have a longitudinal zero line Figure 1 is a side elevation of the gage; 21. When the zero point on the nut 13 coin- Fig. 2 is an edge view thereof, and Fig. 3 cides with the line 21, the center or middle is a section on the line 33 of Fig. 2. Fig. point of the gage is indicated. 30 4 is an enlarged elevation of a fragment of I claim: the graduated stem hereinafter referred to. 1. A micrometer gage comprising ashank,

Referring specifically to the drawing, 5 a jaw extending from the shank, said shank and 6, respectively, denote the two jaws of having a recess and a longitudinal bore exthe gage between which the work to be tending therefrom, and an opening inter- 5 measured is placed. The faces of the jaws secting said bore, a jaw having a reduced are plain and parallel. The jaw 5 extends portion which is slidably mounted in the from a shank 7, and the jaw 6 has a sliding recess, a stem extending from said reduced connection with saidshank. This connecportion into the bore, said stem having a tion is made as follows: The end of the threaded portion and graduations at the shank, opposite the end from which the jaw ends thereof, and a non-traveling nut 5 extends, has a recess 8 in which the rescrewed on the threaded portion of the stem duced inner end 9 of the jaw 6 seats, said and seating in the aforesaid opening, said portion of the jaw being made slightly wider nut having a graduated surface, and the than the work-engaging portion thereof, and opening being reduced at its ends to expose being flush with the inner edge of the shank. L the graduated portions of the stem. The inner end of the reduced jaw portion 9 2. A micrometer gage comprising a shank, has a stem 10 which extends at a right ana jaw extending from the shank, said shank gle to the jaw. The stem is cylindrical and having a longitudinal bore and an opening works in a longitudinal bore 11 made in the intersecting the same, a jaw having a stem 10o shank 7 The stem has a finely threaded which extends into the bore, said stem havportion12 on which is screwed a non-traveling a threaded portion and graduations at ing cylindrical nut 13 seating in a transverse the ends thereof, and a non-traveling nut opening 14 in the shank, said opening interscrewed on the threaded portion of the stem secting the bore. The nut has an interme and seating in the aforesaid opening, said diate knurled surface 15 to facilitate the nut having a graduated surface, and the turning thereof. opening being reduced at its ends to expose It will be obvious from the foregoing that the graduated portions of the stem.

the jaw 6 is caused to approach the jaw 5 3. A micrometer gage comprisingashank, upon turning the nut 13 in one direction, a jaw extending from the shank, said shank 11c and to recede therefrom upon turning the having a recess and a longitudinal bore extending therefrom, and an opening internut in the opposite direction. The nut,

the stem and a transverse pin carried by the shank and passing through the aforesaid slot in the inner portion of the second-mentioned jaw.

In testimony whereof I afiix my signature in presence of two Witnesses.

JAMES TAGUE.

Vitnesses S. J. Lemme, H. G. BATCHELOR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Yatents, Washington, D. C.

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