US2462427A - Picks and like tools - Google Patents

Picks and like tools Download PDF

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Publication number
US2462427A
US2462427A US611960A US61196045A US2462427A US 2462427 A US2462427 A US 2462427A US 611960 A US611960 A US 611960A US 61196045 A US61196045 A US 61196045A US 2462427 A US2462427 A US 2462427A
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United States
Prior art keywords
handle
head
tools
fastener
socket
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Expired - Lifetime
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US611960A
Inventor
John C Roche
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DORENE J ZAHANION
Original Assignee
DORENE J ZAHANION
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Publication date
Application filed by DORENE J ZAHANION filed Critical DORENE J ZAHANION
Priority to US611960A priority Critical patent/US2462427A/en
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Publication of US2462427A publication Critical patent/US2462427A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D7/00—Picks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/10—Details of socket shapes

Definitions

  • the tool head receiving end of the handle or helve is tapered inwardly, the tool head being provided with a socket having a correspondingly shaped inward taper.
  • Such tools are subjected to very severe uses and stresses in use and are subject to severe weather conditions, with the result that the head frequently becomes loosened and may slide toward the grip end of the handle and quite frequently workmen are injured.
  • the main object of this invention is to provide in a tool of this character a structure in which the tool head is firmly anchored to the handle and cannot slide on the handle to the possible injury of the workman.
  • Fig. 1 is a side elevation of a pick embodying the invention.
  • Fig. 2 is an enlarged fragmentary view partially in section on line 2-2 of Fig. 1.
  • Fig. 3 is a perspective view of the head fastener of this invention.
  • the fastener member 1 comprises a shaft portion 8 of a length exceeding the length of the head socket and terminating at its outer end in an inturned end 9 which laps the end of the handle.
  • the inturned end terminates in a prong H! which is driven longitudinally into the end of the handle.
  • the shaft is disposed in the groove but the groove is of such depth relative to the thickness of the shaft that there is a wedging engagement between the shaft and handle and the socket when the parts are in assembled relation.
  • the end of the fastener is bent outwardly and clamped over the inner edge of the head socket to provide a retaining hook l2.
  • the fastener member may be placed in position with its prong driven into the end of the handle and its shaft disposed within the groove.
  • the head is then slipped over the handle and over the fastener element and firmly driven upon the inwardly tapered head receiving end portion of the handle. This may commonly be done by blows on the head end of the handle or resulting from striking the end against a suitable surface.
  • the end of the fastener is bent over and clamped upon the upper edge of the head socket
  • the inner edge of the upper end of the shaft is beveled at H and this becomes the outer edge when it is clamped into position.
  • the prong l0 serves to support the fastener while the head is being assembled therewith and also serves to anchor the laterally turned end 9 and prevent its being displaced or bent outwardly when the tool is in use.
  • the fastener may be assembled by driving its shaft into the socket with the handle assembled therewith. That may be desirable when the device is applied to old tools.
  • a handle having an inwardly tapered tool head-engaging end substantially ovate in cross-section providing 'flattened sides, one of the flattened sides having a relatively Wide groove therein with a flat bottom wall, a tool head having an inwardly tapering socket of a shape in cross-section to mate with the tapering end of said handle, the groove being of greater length than the length of the tool head socket, and a fastener for anchoring the tool head on the handle including a bar rectangular in cross-section of substantially the same width of the groove and of a thickness greater than the depth of the groove to provide wedging engagement between the tool head and handle, the outer end of the bar being reversely angularly bent to provide a terminal 7 prong adapted to be driven into the outer end of the handle and the inner end of the bar adapted to be bent away from the handle and into U- shape for overlying the flattened side wall of the 7 tool head.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Description

Feb. 22, 1949. J. c. ROCHE PICK AND LIKE TOOLS Filed Aug. 22, 1945 INVENTOR. 055/? C Woe/m Patented Feb. 22, 1949 PICKS AND LIKE TOOLS John C. Roche, Battle Creek, Mich., assignor of one-half to Dorene J. Zahanion, Battle Creek,
Mich.
Application August 22, 1945, Serial No. 611.960
2 Claims. (01. 306-32) This invention relates to improvements in picks and like tools.
In tools of the pick and grub hoe type the tool head receiving end of the handle or helve is tapered inwardly, the tool head being provided with a socket having a correspondingly shaped inward taper. Such tools are subjected to very severe uses and stresses in use and are subject to severe weather conditions, with the result that the head frequently becomes loosened and may slide toward the grip end of the handle and quite frequently workmen are injured.
The main object of this invention is to provide in a tool of this character a structure in which the tool head is firmly anchored to the handle and cannot slide on the handle to the possible injury of the workman.
Objects relating to details and economies of the invention will definitely appear from the description to follow. The invention is defined in the claims.
A structure which embodies the features of the invention is clearly illustrated in the accompanying drawing, in which:
Fig. 1 is a side elevation of a pick embodying the invention.
Fig. 2 is an enlarged fragmentary view partially in section on line 2-2 of Fig. 1.
Fig. 3 is a perspective view of the head fastener of this invention.
In the accompanying drawing I have illustrated my invention as applied to a pick but it will be understood that it is desirable for use in grub hoes and like tools. These tools are subjected to very heavy strains in use, being frequently used to pry objects from the ground or heavy blocks of material such, for example, as in breaking up and removing a concrete paving slab or other type of pavement. Since stresses tend to pull the head of the tool from the handle, the handle I is provided with an inwardly tapered tool head receiving end portion 2 of fiattened section. The tool head 3 illustrated is of the double bit pick type and is provided with an inwardly tapered socket 4 of flattened section fittingly engaging the handle end portion 2. The end portion 2 of the handle has a longitudinal groove 5 therein preferably extending somewhat above the inner edge 6 of the handle socket.
The fastener member 1 comprises a shaft portion 8 of a length exceeding the length of the head socket and terminating at its outer end in an inturned end 9 which laps the end of the handle. The inturned end terminates in a prong H! which is driven longitudinally into the end of the handle. The shaft is disposed in the groove but the groove is of such depth relative to the thickness of the shaft that there is a wedging engagement between the shaft and handle and the socket when the parts are in assembled relation. The end of the fastener is bent outwardly and clamped over the inner edge of the head socket to provide a retaining hook l2.
In assembling, the fastener member may be placed in position with its prong driven into the end of the handle and its shaft disposed within the groove. The head is then slipped over the handle and over the fastener element and firmly driven upon the inwardly tapered head receiving end portion of the handle. This may commonly be done by blows on the head end of the handle or resulting from striking the end against a suitable surface. When the head is firmly positioned the end of the fastener is bent over and clamped upon the upper edge of the head socket To facilitate the bending and also to provide a sharp edge the inner edge of the upper end of the shaft is beveled at H and this becomes the outer edge when it is clamped into position. The prong l0 serves to support the fastener while the head is being assembled therewith and also serves to anchor the laterally turned end 9 and prevent its being displaced or bent outwardly when the tool is in use. The fastener may be assembled by driving its shaft into the socket with the handle assembled therewith. That may be desirable when the device is applied to old tools.
I have illustrated my invention as applied to a pick but there are other tools such as grub hoes, mattocks and the like in which the invention may be embodied. It is believed this disclosure will enable those skilled in the art to embody or adapt the invention as may be desired.
Having thus described my invention what I claim as new and desire to secure by Letters Patent is:
1. In a fastener for tool heads, a handle having an inwardly tapered tool head-engaging end substantially ovate in cross-section providing 'flattened sides, one of the flattened sides having a relatively Wide groove therein with a flat bottom wall, a tool head having an inwardly tapering socket of a shape in cross-section to mate with the tapering end of said handle, the groove being of greater length than the length of the tool head socket, and a fastener for anchoring the tool head on the handle including a bar rectangular in cross-section of substantially the same width of the groove and of a thickness greater than the depth of the groove to provide wedging engagement between the tool head and handle, the outer end of the bar being reversely angularly bent to provide a terminal 7 prong adapted to be driven into the outer end of the handle and the inner end of the bar adapted to be bent away from the handle and into U- shape for overlying the flattened side wall of the 7 tool head.
2. A fastener as in claim 1, wherein the inner end of the bar is bevelled to facilitate prying of said end from the groove in the handle for bend- 15 ing around the side of the tool head. 7
JOHN C. ROCHE.
4 REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 453,595 Jefieris June 2, 1891 1,204,206 Thomason Nov. '7, 1916 1,914,802 Cochrane June 20', 1933 1,947,832 Dobbins Feb. 20, 1934 2,103,409 Ford Dec. 28, 1937 V FOREIGN PATENTS Number Country Date Great Britain Nov. 1, 1923
US611960A 1945-08-22 1945-08-22 Picks and like tools Expired - Lifetime US2462427A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614004A (en) * 1950-01-06 1952-10-14 Johnson Walter Folding pick

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US453595A (en) * 1891-06-02 Richard w
US1204206A (en) * 1916-03-06 1916-11-07 William P Thomason Hoe.
GB206038A (en) * 1922-12-07 1923-11-01 Ralph Henry Edward Davies Improved means for securing shaft heads to brooms, hammers, pickaxes and other toolsof a like nature
US1914802A (en) * 1930-12-20 1933-06-20 Nat Lock Washer Co Tool handle securing means
US1947832A (en) * 1932-06-18 1934-02-20 George E Dobbins Fastening device for securing the head of a hammer, hatchet, or the like
US2103409A (en) * 1936-08-18 1937-12-28 Major R Ford Tool construction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US453595A (en) * 1891-06-02 Richard w
US1204206A (en) * 1916-03-06 1916-11-07 William P Thomason Hoe.
GB206038A (en) * 1922-12-07 1923-11-01 Ralph Henry Edward Davies Improved means for securing shaft heads to brooms, hammers, pickaxes and other toolsof a like nature
US1914802A (en) * 1930-12-20 1933-06-20 Nat Lock Washer Co Tool handle securing means
US1947832A (en) * 1932-06-18 1934-02-20 George E Dobbins Fastening device for securing the head of a hammer, hatchet, or the like
US2103409A (en) * 1936-08-18 1937-12-28 Major R Ford Tool construction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614004A (en) * 1950-01-06 1952-10-14 Johnson Walter Folding pick

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