US191315A - Improvement in screw-thread counters - Google Patents

Improvement in screw-thread counters Download PDF

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US191315A
US191315A US191315DA US191315A US 191315 A US191315 A US 191315A US 191315D A US191315D A US 191315DA US 191315 A US191315 A US 191315A
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screw
improvement
threads
plates
thread counters
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/38—Gauges with an open yoke and opposed faces, i.e. calipers, in which the internal distance between the faces is fixed, although it may be preadjustable
    • G01B3/40—Gauges with an open yoke and opposed faces, i.e. calipers, in which the internal distance between the faces is fixed, although it may be preadjustable for external screw-threads

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  • the object of my invention is to provide a ready and convenient means for determining the number of threads to the inch upon screwthreads of taps, dies, bolts, nuts, and other articles and it consists of a series of plates pivoted together, and having their edges serrated to represent the different threads usual to screws. Either of these plates may be turned out from the others, and by trying its serrated edge upon the threads of the screw a glance will show Whether it is the gage sought.
  • Figure l is a view of my device closed.
  • Fig. 2 is a view, showing an exterior gage.
  • Fig. 3 is a view, showing an interior gage.
  • a A are two outer leaves or cases, between i which are placed as many plates 0 as may be needed or desired. These plates and protecting-leaves are pivoted at a point, D, which will allow of any one being opened out independent of the case, so as to be applied to the work.
  • the notched or serrated plates for the purpose of determining the number of threads upon bolts, nuts, dies, taps, &c., substantially as herein described.
  • the serrated plates for indicating the number of threads to an inch, said plates being united at D, so as to form a case or book of indicators of diiferent sizes, substantially as herein described.

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  • General Physics & Mathematics (AREA)
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Description

C. C. COLEMAN.
SCREW-THREAD COUNTER.
No. 191,315. Patented May 29,1877.
Wi ne ses nv n or' 7 MP Q W N. PETERS PHOTO-UTHOGRAPNER, WAsmNGTON D c UNITED PATENT Qrrron.
CHARLES O. COLEMAN, OF HONOLULU, HAWAII.
IMPROVEMENT IN SCREW-THREAD COUNTERS.
Specification forming part of Letters Patent No. 191,3 [5, dated May 29, 1877; application filed March 17, 1877.
To all whom it may concern Be it known that 1, CHARLES C. COLEMAN, of Honolulu, Hawaii, have invented a Screw- Thread Counter; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings.
The object of my invention is to provide a ready and convenient means for determining the number of threads to the inch upon screwthreads of taps, dies, bolts, nuts, and other articles and it consists of a series of plates pivoted together, and having their edges serrated to represent the different threads usual to screws. Either of these plates may be turned out from the others, and by trying its serrated edge upon the threads of the screw a glance will show Whether it is the gage sought.
Referring to the accompanying drawings for a more complete explanation of my invention, Figure l is a view of my device closed. Fig. 2 is a view, showing an exterior gage. Fig. 3 is a view, showing an interior gage.
A A are two outer leaves or cases, between i which are placed as many plates 0 as may be needed or desired. These plates and protecting-leaves are pivoted at a point, D, which will allow of any one being opened out independent of the case, so as to be applied to the work.
Upon a free edge of these plates 0 are made teeth, of a shape and angle to fit screw-threads of difl'erent degrees of fineness, and the num.
the hole and fitted without trouble into the threads.
By this mechanism I provide a ready and convenient means for ascertaining at once the number of threads to the inch upon any undetermined bolt or nut, or upon taps or dies which are not marked, and the selection of the necessary counterpart is expeditiously determined.
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-
1. The notched or serrated plates 0, for the purpose of determining the number of threads upon bolts, nuts, dies, taps, &c., substantially as herein described.
2. The serrated plates 0, for indicating the number of threads to an inch, said plates being united at D, so as to form a case or book of indicators of diiferent sizes, substantially as herein described.
In witness whereof I have hereunto set my hand and seal.
CHARLES C. COLEMAN. [L. s.]
Witnesses:
T. B. HASOALL, GEO. P. GAsTLE.
US191315D Improvement in screw-thread counters Expired - Lifetime US191315A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4438646A (en) * 1981-01-19 1984-03-27 Caterpillar Tractor Co. Crankshaft journal surface gauge and kit thereof
US6047606A (en) * 1998-05-06 2000-04-11 Sibole; R. Wade Combination bolt sizing tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4438646A (en) * 1981-01-19 1984-03-27 Caterpillar Tractor Co. Crankshaft journal surface gauge and kit thereof
US6047606A (en) * 1998-05-06 2000-04-11 Sibole; R. Wade Combination bolt sizing tool

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