US135340A - Improvement in screw-drivers - Google Patents
Improvement in screw-drivers Download PDFInfo
- Publication number
- US135340A US135340A US135340DA US135340A US 135340 A US135340 A US 135340A US 135340D A US135340D A US 135340DA US 135340 A US135340 A US 135340A
- Authority
- US
- United States
- Prior art keywords
- jaws
- screw
- plunger
- drivers
- improvement
- 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
- 210000001847 Jaw Anatomy 0.000 description 24
- 210000003141 Lower Extremity Anatomy 0.000 description 2
- 210000001699 lower leg Anatomy 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/02—Arrangements for handling screws or nuts
- B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
- B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
- B25B23/103—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means for gripping threaded studs
Definitions
- Fig. 3 is a view of the plunger.
- Fig. 4 is a view of one of the jaws.
- I first prepare the body or barrel A by boring the hole for the plunger B and planing grooves 0 in the sides of the barrel to receive the jaws C. There is a projection on the lower end of the barrel, shown at H, through which the jaws pass, and
- pin 0 being the fulcrum of the lever, formed by extending the jaws upward.
- the upper end of the plunger B is made cone-shape, and the lower end, K, is made a little smaller than thescrew or article which is intended tobe grasped and held.
- the spring-band I being placed in the recesses L in the upper end of the jaws or levers holds them inward on the cone at the upper end of the plunger B, and
- the shank E is placed in a socket to fit, which may be worked by hand or power, and the whole thing is revolved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Meat, Egg Or Seafood Products (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Description
F. B. HUNT.
Screw-Drivers.
Patentedjaq. 28,1873.
Fig.1
UNITED STATES PATENT OFFICE FRANKLIN B. HUNT, OF RICHMOND, INDIANA, ASSIGN OR TO EDWARD R. MATTHEWS AND WILLIAM N. MATTHEWS, OF SAME PLACE.
IMPROVEMENT IN SCREW-DRIVERS. v
Specification forming part of Letters Patent No. 135,340, dated January 28, 1873.
11d of the levers or jaws against the plunger Fig. 3 is a view of the plunger. Fig. 4 is a view of one of the jaws. I
In making the chuck, I first prepare the body or barrel A by boring the hole for the plunger B and planing grooves 0 in the sides of the barrel to receive the jaws C. There is a projection on the lower end of the barrel, shown at H, through which the jaws pass, and
7 also a pin, 6, upon which the jaws vibrate, the
pin 0 being the fulcrum of the lever, formed by extending the jaws upward. The upper end of the plunger B is made cone-shape, and the lower end, K, is made a little smaller than thescrew or article which is intended tobe grasped and held. The spring-band I being placed in the recesses L in the upper end of the jaws or levers holds them inward on the cone at the upper end of the plunger B, and
opens the jaws at their lower extremities. The shank E is placed in a socket to fit, which may be worked by hand or power, and the whole thing is revolved. 3
Thus it will be seen that when the whole machine is pressed'down upon the top of the screw, as shown at G, Fig. 1, the lower end of the plunger comes in contact with the upper end of the screw, and is thereby forced upward, and the upper tapering end of the plunger B is forced between the upper inclined ends of the jaws, as shown at S,'pressing them outwardly, and consequently the lower ends inwardly, to grasp the screw. I thus combine two forces; the lever formed by the jaws and the inclined plane of the upper end of the plunger. In place of the spring-band I, sepa rate springs may be attached to the upper end of the barrel, which will press upon the upper end of the levers or jaws O, fand keep them in place when the machine is at rest.
Any suitable attachment of spring or springs for this purpose may be used.
What I claim, and desire to secure by Letters Patent, is
The combination of the barrel A, jaws O, plunger B, and spring-band 1, when operating in the manner and for the purpose substau tiall y as described.
FRANKLIN B. HUNT.
Witnesses:
NELsoN A. HUNT, WM. N. MATTHEWS.
Publications (1)
Publication Number | Publication Date |
---|---|
US135340A true US135340A (en) | 1873-01-28 |
Family
ID=2204756
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US135340D Expired - Lifetime US135340A (en) | Improvement in screw-drivers |
Country Status (1)
Country | Link |
---|---|
US (1) | US135340A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030112147A1 (en) * | 2000-05-05 | 2003-06-19 | George Christopher M. | Overbed table for use with a patient support |
-
0
- US US135340D patent/US135340A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030112147A1 (en) * | 2000-05-05 | 2003-06-19 | George Christopher M. | Overbed table for use with a patient support |
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