US107946A - Improvement in expanding taps - Google Patents
Improvement in expanding taps Download PDFInfo
- Publication number
- US107946A US107946A US107946DA US107946A US 107946 A US107946 A US 107946A US 107946D A US107946D A US 107946DA US 107946 A US107946 A US 107946A
- Authority
- US
- United States
- Prior art keywords
- expanding
- drill
- taps
- improvement
- mandrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000001513 Elbow Anatomy 0.000 description 2
- 210000002832 Shoulder Anatomy 0.000 description 2
- 230000001808 coupling Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
- B23B49/003—Stops attached to drilling tools, tool holders or drilling machines
- B23B49/005—Attached to the drill
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/89—Tool or Tool with support
- Y10T408/892—Tool or Tool with support with work-engaging structure detachable from cutting edge
- Y10T408/8925—Depth-limiting member
Definitions
- the nature of this invention relates to an expanding tap and drill to be used in drilling and tapping pipe couplings and elbows; and it consists of a drill having thread-cutters arranged in the sides in such a manner that they may be expanded tocut the thread and then Vcollapsed to enable the drill to be withdrawn the mandrel is fitted a sleeve or ring, D, through which and the mandrel and the pin C is a slot, into which is fitted a key, d, the slot in the mandrel being longer thanthe others to allow the key to play back and forth a short distance, the purpose of which is hereinafter shown.
- the drill B is tted a similar ring, D', with a key, d'.
- the outer end of the Fig. Ll is a perspective view of the drillA pin C is reduced in size by having two tapering shoulders, e e, turned upon it. Through the end of the drill are made mortises f, in
- the operation is as follows: The mandrel and drill are made to traverse back and forth by means of a cam or other suitable means.
- the ring D comes Vin Contact with a plate for the purpo'se,-when the center-pin will be carried forward and the cutters g g forced outward and perform "their work; when, by the motion of the mandrel forward, the ring D will come in contact with the work, causing the pin to be pushed back again, when the cutters will be immediately collapsed, and the work may be freed from the drill.
- the mandrel. by itstraverse motion enables the work to be performed very expeditiously.
Description
'EEANKMUEGATROYiL- IMPROVEMENT IN EXPANDING TAPS.
OE cLEvELAND, OHIO.
Specification forming part of Letters Patent No. 107,946, dated October 4, 1870.
T0 a/ZZ whom itV may concern:
Be it known that I, FRANK MURGATROYD, of Cleveland, in the County of Cuyahoga and State of Ohio, have invented a certain new and useful Expanding Tap and Drill, o f which the following is a specification.
The nature of this invention relates to an expanding tap and drill to be used in drilling and tapping pipe couplings and elbows; and it consists of a drill having thread-cutters arranged in the sides in such a manner that they may be expanded tocut the thread and then Vcollapsed to enable the drill to be withdrawn the mandrel is fitted a sleeve or ring, D, through which and the mandrel and the pin C is a slot, into which is fitted a key, d, the slot in the mandrel being longer thanthe others to allow the key to play back and forth a short distance, the purpose of which is hereinafter shown. Uponthe drill B is tted a similar ring, D', with a key, d'. The outer end of the Fig. Ll is a perspective view of the drillA pin C is reduced in size by having two tapering shoulders, e e, turned upon it. Through the end of the drill are made mortises f, in
which are tted thread-cutters g g, the inside edges of which arev fitted to the pin C, the Vaction of the pin being to force the cutters outward. The ring D reachespart way over them, and prevents them dropping out.
The operation is as follows: The mandrel and drill are made to traverse back and forth by means of a cam or other suitable means. When the cutters are to be expanded the ring D comes Vin Contact with a plate for the purpo'se,-when the center-pin will be carried forward and the cutters g g forced outward and perform "their work; when, by the motion of the mandrel forward, the ring D will come in contact with the work, causing the pin to be pushed back again, when the cutters will be immediately collapsed, and the work may be freed from the drill. Thus the mandrel. by itstraverse motion enables the work to be performed very expeditiously.
.I claim as my invention- The rings D and D', keys el and d', the pin C, and the cutters g g, in combination with the mandrel A and drill B, substantially as and for the purpose set forth.
F. MURGATROYD.
Witnesses: C. E. Trisitrfrs, GEO. HEsrEE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US107946A true US107946A (en) | 1870-10-04 |
Family
ID=2177420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US107946D Expired - Lifetime US107946A (en) | Improvement in expanding taps |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US107946A (en) |
-
0
- US US107946D patent/US107946A/en not_active Expired - Lifetime
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