US3756298A - Handsaw - Google Patents

Handsaw Download PDF

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Publication number
US3756298A
US3756298A US00139546A US3756298DA US3756298A US 3756298 A US3756298 A US 3756298A US 00139546 A US00139546 A US 00139546A US 3756298D A US3756298D A US 3756298DA US 3756298 A US3756298 A US 3756298A
Authority
US
United States
Prior art keywords
blade
handsaw
passageway
handle portion
leg
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
Application number
US00139546A
Other languages
English (en)
Inventor
R West
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stanley Works
Original Assignee
Stanley Works
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stanley Works filed Critical Stanley Works
Application granted granted Critical
Publication of US3756298A publication Critical patent/US3756298A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D49/00—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws
    • B23D49/10—Hand-held or hand-operated sawing devices with straight saw blades
    • B23D49/14—Pad saws

Definitions

  • Another object is to provide such a handsaw having clamping means on the support portion which is of simple design and yet highly effective.
  • a still further object of the invention is to provide such a handsaw having the foregoing features and advantages, which in addition employs relatively few and simple components, and which may be produced in a relatively facile and economical manner.
  • the support portion extends from one end of the handle portion, and has its free end providing support for the blade at a point spaced from the handle portion.
  • the handsaw also includes means on the free end of the support portion disengageably clamping the blade in a fixed position within the handle.
  • the handle portion is elongated, and it has a complex external configuration providing longitudinally extending ribs along the upper and lower side margins thereof and recessed side surface portions therebetween. The configuration of the handle portion affords a secure and comfortable grip on the handsaw during use.
  • the fastener draws the clamping plate tightly against the blade, and the blade thereby against the surface of the leg, to clamp the blade tightly therebetween.
  • the stepped surface of the leg providing the free end has a double-stepped configuration providing a second shoulder spaced inwardly from the first shoulder.
  • the clamping plate is seated on the step provoding the second shoulder, the latter being of a depth substantially equal to the thickness of the clamping plate to provide a substantially flush side surface.
  • the clamping plate is internally threaded and cooperates with an externally threaded bolt to provide a fastener, and ideally the aperture is present adjacent the first mentioned shoulder. In such a case, the fastener extends below the shoulder with the blade bearing against the shank thereof.
  • the blade of the handsaw will be of substantially uniform width along its entire length and the passageway to the handle portion will be dimensioned and configured to enable facile insertion and sliding movement of the blade thereinto.
  • the passageway beneficially has a portion of reduced cross-sectional area snugly seating the blade.
  • the reduced portion of the passageway extends inwardly from the one" end of the handle portion and the passageway has a portion of greater cross-sectional area extending inwardly from the opposite end thereof.
  • the passageway of such embodiments is dimensioned and configured to provide a trans-sectional portion blending the reduced and greater cross-sectional area portions and providing guide surfaces to facilitate insertion of the blade into the passageway from the opposite end of the handle portion.
  • the reduced cross-sectional area portion of the passageway includes generally U- shaped channels snugly seating the upper and lower edges of the blade, and the greater cross-sectional area portion thereof is of generally octagonal configuration.
  • FIG. 1 is a perspective view of a handsaw enbodying the present invention
  • FIG. 3 is a front end elevational view of the handsaw drawn to a slightly enlarged scale from that of FIG. 1;
  • FIG. 5 is a fragmentary side elevational view of the front end of the assembled handsaw, with nut plate omitted for clarity of illustration;
  • a handsaw embodying the present invention including a one-piece holder, generally designated by the numeral 10, which is molded from a synthetic resinous material.
  • a hacksaw blade mounted within the holder 10 is a hacksaw blade, generally designated by the numeral 12, which is of conventional thin, flexible construction and has a width dimension a" that is uniform along its entire length.
  • the elongated handle portion 14 of the holder 10 has a complex external configuration providing longitudinally extending rib elements 16 along the lower side margins thereof, and recessed side surface portions 18 that diverge upwardly and blend to an enlarged upper surface portion 20 providing rib elements 21 thereat.
  • This configuration of the handle portion 14 renders the saw comfortable to hold and enables secure gripping thereof in the operative position; as will be noted, the handle portion 14 also has a complex curvilinear external configuration along its longitudinal axis, which further contributes to the comfort and security of the grip thereon.
  • the eleptical apertures 22 that are centrally located within the surface portions 18 are caused by the use of stabilizing mold elements, and serve no necessary function in the tool herein described.
  • one side surface of the leg 30 has a double-stepped configuration provided by a first inside surface 40 extending upwardly from the free edge of the leg 30 to the shoulder 41 which extends in the direction of the longitudinal axis of the holder 10 and is of a depth substantially equal to the thickness of the blade 12.
  • the double-stepped configuration also includes a second, shallower side surface 42 that extends from the first shoulder 41 to an angularly disposed shoulder 44, which rises to the plane of that side surface of the body of the leg 30.
  • the leg 30 of the support portion 24 Centered on the shoulder 41, has a centrally located aperture 34 passing therethrough, in which is received the threaded shank 36 of the slotted thumbscrew 38.
  • the upper edge of the blade 12 bears upon the shank 36 of the thumbscrew 38.
  • the holder may be molded of any of numerous different types of synthetic thermosetting and thermoplastic resins.
  • Exemplary polymers include the polyolefins, such as polyethylene and polypropylene; the vinyl and vinylidene resins, such as polystyrene, polyvinyl chloride, impact polystryrene and the ABS-types of graft copolymers; filled polymers, such as the fiberglass reinforced polyesters; the long-chain synthetic polyamides, and many others.
  • the particular means by which the blade is clamped may also vary considerably from that illustrated although that embodiment offers a particularly effective means of tightly securing the blade in a quick and convenient manner.
  • the support portion of the holder is configured to provide a relatively large clearance area over the portion of the blade that extends thereacross, while also providing wholly adequate support therefor, and the clamping means on the support portion is of simple and yet highly effective-design.
  • the handle portion may be specifically configured to permit facile insertion of the saw blade thereinto, while at the same time limiting twisting and other undesirable movement of the blade about its longitudinal axis within the holder.
  • the handsaw employs relatively few and simple components and may be produced in a relatively facile and economical manner.
  • a handsaw comprising a relatively thin and flexible elongated saw blade of substantially uniform thickness along its entire length; a molded one piece holder for said blade integrally formed from a synthetic resinous material and comprising a handle portion having a longitudinal passageway in which a portion of said blade is slidably seated and a rigid support portion of generally inverted U-shaped configuration extending from one end of said handle portion and providing a pair of depending legs and an elongated center arm with the leg at its free end providing support for said blade at a point spaced from said handle portion, said elongated center arm being spaced above said saw blade to provide an elongated clearance area above said blade; and means on said leg at said free end of said support portion disengageably clamping said blade in a fixed position within said holder, said handle portion being elongated with a complex external configuration providing longitudinally extending ribs along the upper and lower side margins and recessed side surface portions therebetween, said external configuration facilitating secure and comfortable gripping of said handsaw, said passageway through said handle
  • said leg of said support portion providing said free end has a stepped surface on one side thereof adjacent said free end providing a shoulder extending in the direction of the longitudinal axis of said holder and of a depth substantially equivalent to the thickness of said blade, said leg having an aperture extending therethrough; and wherein said clamping means includes a fastener extending through said aperture in said leg and a clamping plate seated on the surface of said leg and of said blade, said fastener drawing said clamping plate tightly against said blade and said blade thereby against the surface of said leg to clamp said blade tightly therebetween.
  • stepped surface of said leg providing said free end has a doublestepped configuration providing a second shoulder spaced inwardly from said first shoulder, said clamping plate being seated on the step providing said second shoulder, said second shoulder being of a depth substantially equal to the thickness of said clamping plate to provide a substantially flush side surface.
  • clamping plate is internally threaded and cooperates with an externally threaded bolt to provide said fastener.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)
  • Knives (AREA)
US00139546A 1971-05-03 1971-05-03 Handsaw Expired - Lifetime US3756298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13954671A 1971-05-03 1971-05-03

Publications (1)

Publication Number Publication Date
US3756298A true US3756298A (en) 1973-09-04

Family

ID=22487203

Family Applications (1)

Application Number Title Priority Date Filing Date
US00139546A Expired - Lifetime US3756298A (en) 1971-05-03 1971-05-03 Handsaw

Country Status (7)

Country Link
US (1) US3756298A (de)
BR (1) BR7202501D0 (de)
CA (1) CA949433A (de)
DE (1) DE2221351C3 (de)
FR (1) FR2135560B1 (de)
GB (1) GB1337892A (de)
IT (1) IT952997B (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4651425A (en) * 1986-04-16 1987-03-24 Alltrade, Inc. Hacksaw
EP0286613A2 (de) * 1987-04-06 1988-10-12 Sandvik Aktiebolag Metallsägevorrichtung
US5577325A (en) * 1995-10-23 1996-11-26 Bentley; Daniel D. Wood cutting blade attachment device
US5832615A (en) * 1996-12-12 1998-11-10 Pumpkin, Ltd. Hand-held cutting tool with fatigue-resistant blade
US6266887B1 (en) 1999-08-10 2001-07-31 The Stanley Works Hacksaw and method for making the same
US6497046B1 (en) 1998-09-18 2002-12-24 Pumpkin Ltd. Safety saw for cutting soft materials
US20030226265A1 (en) * 2002-06-06 2003-12-11 Chin-Hui Chen Saw blade securign device
US6820340B1 (en) 1999-04-15 2004-11-23 The Stanley Works Low profile hacksaw
US20070204472A1 (en) * 2006-03-01 2007-09-06 Helen Of Troy Limited Hacksaw
US7269905B1 (en) * 2005-07-06 2007-09-18 Yin-Hae Huang Structure of a miniature hacksaw
US20100263218A1 (en) * 2007-07-03 2010-10-21 Industrial Rd Lc Knife with blade spine support and magnetic knife mounting block therefor
US20110061248A1 (en) * 2009-09-16 2011-03-17 Ebner Jeremy R Compact hacksaw
US9427882B1 (en) 2013-07-26 2016-08-30 Ronald Wagoner Pocket safety saw
CN110293263A (zh) * 2019-07-26 2019-10-01 舟山春蕾锯业有限公司 方便拆装锯条的手工锯
USD950346S1 (en) * 2021-07-05 2022-05-03 Seven Continents International Trade Co., Ltd. Hacksaw frame

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2139147A (en) * 1936-04-08 1938-12-06 Armstrong Blum Mfg Co Saw blade supporting and clamping device
US2331638A (en) * 1942-09-23 1943-10-12 Fred R Taylor Toolholder
US2655963A (en) * 1950-03-18 1953-10-20 Bostitch Inc Finger grip for handles of tools
US2920668A (en) * 1959-03-17 1960-01-12 Leland E Leist Hacksaw
GB935876A (en) * 1961-10-17 1963-09-04 Abbott Birks & Company Ltd Improvements in or relating to hacksaws
US3447580A (en) * 1967-10-16 1969-06-03 Malco Products Inc Hand cutting tool and holder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1726241A (en) * 1928-07-05 1929-08-27 Schubert Paul Theodore Hack-saw-blade holder
US3338278A (en) * 1965-12-06 1967-08-29 Estwing Mfg Company Inc Saber-type saw
US3480055A (en) * 1968-09-09 1969-11-25 Parker Mfg Co Saw holder

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2139147A (en) * 1936-04-08 1938-12-06 Armstrong Blum Mfg Co Saw blade supporting and clamping device
US2331638A (en) * 1942-09-23 1943-10-12 Fred R Taylor Toolholder
US2655963A (en) * 1950-03-18 1953-10-20 Bostitch Inc Finger grip for handles of tools
US2920668A (en) * 1959-03-17 1960-01-12 Leland E Leist Hacksaw
GB935876A (en) * 1961-10-17 1963-09-04 Abbott Birks & Company Ltd Improvements in or relating to hacksaws
US3447580A (en) * 1967-10-16 1969-06-03 Malco Products Inc Hand cutting tool and holder

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4651425A (en) * 1986-04-16 1987-03-24 Alltrade, Inc. Hacksaw
EP0286613A2 (de) * 1987-04-06 1988-10-12 Sandvik Aktiebolag Metallsägevorrichtung
US4827619A (en) * 1987-04-06 1989-05-09 Sandvik Ab Metal saw device
EP0286613A3 (en) * 1987-04-06 1989-12-27 Sandvik Aktiebolag Metal saw device
US5577325A (en) * 1995-10-23 1996-11-26 Bentley; Daniel D. Wood cutting blade attachment device
US5832615A (en) * 1996-12-12 1998-11-10 Pumpkin, Ltd. Hand-held cutting tool with fatigue-resistant blade
US6497046B1 (en) 1998-09-18 2002-12-24 Pumpkin Ltd. Safety saw for cutting soft materials
US6820340B1 (en) 1999-04-15 2004-11-23 The Stanley Works Low profile hacksaw
US6266887B1 (en) 1999-08-10 2001-07-31 The Stanley Works Hacksaw and method for making the same
US20030226265A1 (en) * 2002-06-06 2003-12-11 Chin-Hui Chen Saw blade securign device
US6711825B2 (en) * 2002-06-06 2004-03-30 Chin-Hui Chen Saw blade securing device
US7269905B1 (en) * 2005-07-06 2007-09-18 Yin-Hae Huang Structure of a miniature hacksaw
US20070204472A1 (en) * 2006-03-01 2007-09-06 Helen Of Troy Limited Hacksaw
US20080092400A1 (en) * 2006-03-01 2008-04-24 Helen Of Troy Limited Hacksaw
US20100263218A1 (en) * 2007-07-03 2010-10-21 Industrial Rd Lc Knife with blade spine support and magnetic knife mounting block therefor
US20110061248A1 (en) * 2009-09-16 2011-03-17 Ebner Jeremy R Compact hacksaw
US8613146B2 (en) 2009-09-16 2013-12-24 Milwaukee Electric Tool Corporation Compact hacksaw
DE102010040851B4 (de) * 2009-09-16 2015-10-15 Milwaukee Electric Tool Corp. Kompakt-Bügelsäge
US9427882B1 (en) 2013-07-26 2016-08-30 Ronald Wagoner Pocket safety saw
CN110293263A (zh) * 2019-07-26 2019-10-01 舟山春蕾锯业有限公司 方便拆装锯条的手工锯
USD950346S1 (en) * 2021-07-05 2022-05-03 Seven Continents International Trade Co., Ltd. Hacksaw frame

Also Published As

Publication number Publication date
FR2135560B1 (de) 1973-12-07
GB1337892A (en) 1973-11-21
FR2135560A1 (de) 1972-12-22
CA949433A (en) 1974-06-18
DE2221351A1 (de) 1972-11-16
BR7202501D0 (pt) 1973-06-14
DE2221351B2 (de) 1978-02-23
DE2221351C3 (de) 1978-10-19
IT952997B (it) 1973-07-30

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