US37332A - Improvement in machines for drawing bolts and spikes - Google Patents
Improvement in machines for drawing bolts and spikes Download PDFInfo
- Publication number
- US37332A US37332A US37332DA US37332A US 37332 A US37332 A US 37332A US 37332D A US37332D A US 37332DA US 37332 A US37332 A US 37332A
- Authority
- US
- United States
- Prior art keywords
- spikes
- machines
- improvement
- bolt
- bolts
- 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 8
- 229910000760 Hardened steel Inorganic materials 0.000 description 2
- 206010022114 Injury Diseases 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C11/00—Nail, spike, and staple extractors
-
- 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
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53796—Puller or pusher means, contained force multiplying operator
- Y10T29/53848—Puller or pusher means, contained force multiplying operator having screw operator
- Y10T29/53857—Central screw, work-engagers around screw
- Y10T29/53861—Work-engager arms along or parallel to screw
- Y10T29/53874—Pivotal grippers on screw
Definitions
- ⁇ My invention has for its object to remove bolts or spikes from timbers or sides of ships, 86e., while undergoing repairs more economically and expeditiously than is accomplished by the machines for that purpose now in use, and, as it is desirable to use the withdrawn bolt again, I construct my machine so that it may'be drawn without injury or bending.
- My said invention consists of a pair of levers linked together, the upper ends of which slide in inclined grooves in the foot of a screwshaft, their lower ends forming jaws or nippers, which grip and draw the bolt outward as the shaft ascends.
- A is a metal frame, of sufficient strength to bear the required strain, the lower part of which rests upon the face of the timber from which the bolt is to be drawn.
- Through ahole in the top of this frame passes the shaft B, having a screw-thread cut upon its entire length, and on which works@ nut,
- This shaft is made hollow for the purpose of receiving the end of a bolt, which might project some distance from the face of the timber.
- the lower end of the shaft B terminates in a circular footpiece, D,
Description
UNITED STATES PATENT OFFICE.
JOHN C. CHAPMAN, OF CHARLESTOWN, MASSAOHULETTS.
IMPROVEMENT IN MACHINES FOR DRAWING BOLTS AND SPIKES.
Specication forming part of Letters Patent No. 37,332, dated January 6, 1863.
State of Massachusetts, have invented an Improved Machine for Drawing Bolts and Spikes from Timbers, &c., of which the following is a full, clear, and exact description, reference being had to the accompanying drawing', making part of this specification, in which is represented acentral longitudinal section through my improved machine.
`My invention has for its object to remove bolts or spikes from timbers or sides of ships, 86e., while undergoing repairs more economically and expeditiously than is accomplished by the machines for that purpose now in use, and, as it is desirable to use the withdrawn bolt again, I construct my machine so that it may'be drawn without injury or bending.
My said invention consists of a pair of levers linked together, the upper ends of which slide in inclined grooves in the foot of a screwshaft, their lower ends forming jaws or nippers, which grip and draw the bolt outward as the shaft ascends. y
To enable others skilled in the art to understand my invention, I will proceed to describe the manner in which I have carried it out.
In the drawing, A is a metal frame, of sufficient strength to bear the required strain, the lower part of which rests upon the face of the timber from which the bolt is to be drawn. Through ahole in the top of this frame passes the shaft B, having a screw-thread cut upon its entire length, and on which works@ nut,
G, turned by handles a, thus raising or lower ing the shaft B. This shaft is made hollow for the purpose of receiving the end of a bolt, which might project some distance from the face of the timber. The lower end of the shaft B terminates in a circular footpiece, D,
in the periphery of which and diametrically opposite to each other are cut two inclined grooves, b b. Within these grooves slide the upper ends of two levers, E E, pivoted or shackled to the links o. Thelower ends of these levers (which are of hardened steel) form jaws or nippers, which are provided with asperities on their inner surfaces,so as to clutch -lirmly the bolt to be drawn. The backs of these levers slide in slotted guides d d in the uprights of the frame A A, and are thus kept in a position for insuring a proper hold of the bolt.
The operation of drawing the boltis as follows, viz: The machine is placed over the bolt t0 be drawn. The part of the bolt projecting above the timber is embraced by the jaws, and the operator, turning the handles a a of the nut G, raises the shaft B and footpiece D. As the foot-piece is raised, the upper ends of the levers sliding in its grooves are forced farther apart and cause the jaws or lower ends ofthe levers to take a firm hold of `the bolt, and grip it with such force as to with-
Publications (1)
Publication Number | Publication Date |
---|---|
US37332A true US37332A (en) | 1863-01-06 |
Family
ID=2106909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US37332D Expired - Lifetime US37332A (en) | Improvement in machines for drawing bolts and spikes |
Country Status (1)
Country | Link |
---|---|
US (1) | US37332A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2434254A (en) * | 1944-07-08 | 1948-01-13 | Dale A Benner | Rail leveler |
US2544142A (en) * | 1946-12-06 | 1951-03-06 | William F Dritley | Axle stub-removing tool |
US2844356A (en) * | 1955-04-15 | 1958-07-22 | Losinger Ag | Hydraulic jack for tensioning reinforcing wires of prestressed concrete structures |
US2895216A (en) * | 1955-01-31 | 1959-07-21 | Hirsch Leopold | Disengaging device for glass-holding strips |
US20030212673A1 (en) * | 2002-03-01 | 2003-11-13 | Sundar Kadayam | System and method for retrieving and organizing information from disparate computer network information sources |
US20050064308A1 (en) * | 2000-02-28 | 2005-03-24 | Daiichi Pure Chemicals Co., Ltd | Fluorescent probe for zinc |
US20060252099A1 (en) * | 2000-02-28 | 2006-11-09 | Daiichi Pure Chemicals Co., Ltd. | Method for measurement by using long-lived excitation fluorescence |
US20170252910A1 (en) * | 2015-01-29 | 2017-09-07 | Nicholas J. Turner | Pipe extraction tool |
-
0
- US US37332D patent/US37332A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2434254A (en) * | 1944-07-08 | 1948-01-13 | Dale A Benner | Rail leveler |
US2544142A (en) * | 1946-12-06 | 1951-03-06 | William F Dritley | Axle stub-removing tool |
US2895216A (en) * | 1955-01-31 | 1959-07-21 | Hirsch Leopold | Disengaging device for glass-holding strips |
US2844356A (en) * | 1955-04-15 | 1958-07-22 | Losinger Ag | Hydraulic jack for tensioning reinforcing wires of prestressed concrete structures |
US20050064308A1 (en) * | 2000-02-28 | 2005-03-24 | Daiichi Pure Chemicals Co., Ltd | Fluorescent probe for zinc |
US20060252099A1 (en) * | 2000-02-28 | 2006-11-09 | Daiichi Pure Chemicals Co., Ltd. | Method for measurement by using long-lived excitation fluorescence |
US20030212673A1 (en) * | 2002-03-01 | 2003-11-13 | Sundar Kadayam | System and method for retrieving and organizing information from disparate computer network information sources |
US20170252910A1 (en) * | 2015-01-29 | 2017-09-07 | Nicholas J. Turner | Pipe extraction tool |
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