US907936A - Bolt-cutter. - Google Patents

Bolt-cutter. Download PDF

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Publication number
US907936A
US907936A US44952908A US1908449529A US907936A US 907936 A US907936 A US 907936A US 44952908 A US44952908 A US 44952908A US 1908449529 A US1908449529 A US 1908449529A US 907936 A US907936 A US 907936A
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United States
Prior art keywords
knife
head
fixed knife
cutter
bolt
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Expired - Lifetime
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US44952908A
Inventor
William Woolgar
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Individual
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Priority to US44952908A priority Critical patent/US907936A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B17/00—Hand cutting tools, i.e. with the cutting action actuated by muscle power with two jaws which come into abutting contact
    • B26B17/02—Hand cutting tools, i.e. with the cutting action actuated by muscle power with two jaws which come into abutting contact with jaws operated indirectly by the handles, e.g. through cams or toggle levers

Definitions

  • My invention relates to bolt and rivet cutters, my object being to provide a strong kmfe.
  • Fig. 4 is a rear view of the same.
  • Figs. 5 and 6 aresectional views on lines 5-5 and 6-6. f
  • connection wit t e'hand levers 3 which are pivoted to the frame at 4.
  • the knife is beveled on its upper side and its lower face or cuttin edge works substantially in the plane o the lower edge of ⁇ the frame at the oint 5 where this frame is recessed.
  • the rame is formed 'with an under wall'at 6, which terminates at the recess.
  • the fixed knife is supported in the head of the frame in a socket 6', and thissocket is formed by an end Wall 7 of the head, of the inwardly extending shoulders 8, which reach around in front of the shank 9 of the fixed knife, the bottom of the socket being formed by a flange or lip 10 cast with the head and extending beneath the fixed knife and terminating in an abrupt shoulder at 1l, forming one slde'of the recess 5, above referred to.
  • the fixed knife is formed with an abrupt shoulder at 12 between its blade ortion and its shank portion, this shoulder 'tting down over the underlying edge of the lip casting above described.
  • the blade portion of the knife lies inthe same plane with the upper face of the recess 5 in the head, and thus .in
  • the fixed knife blade like the movable knife blade is beveled on its upper side.
  • the shank of the fixed blade is provided with inclined shoulders ⁇ 13 on its side edges which 'engage Asimilarly inclined shoulders at the lower part of the socket of the head, vwhich receives the fixed blade.
  • the shank of the knife blade is of ⁇ Ishape ⁇ at its lower end and the bottom of the socket is correspondingly formed.
  • the fixed knife is centered and held accurately in position. 4 It will be noticed that the casting of which the head is composed extends below the cutting level and under the shank of the fixed knife giving the head great strength at this point and enabling the apparatus to have greater ower applied thereto. This portion of the ead which reaches under ⁇ the fixed knife shank and abuts against the rear of the fixed knife blade substantially in the plane of its cutting edge gives the knife greater power and strength beyond the cutting edge.
  • the construction of the head described it may be 'made light and small without decreasing its strength, thus making it possible to operate the cutter in difficult positions.
  • the device By means pfthedrop at the cutting head below the plane of thecutting edge, the device may'be readilyem loyed for cutting rivets of the proper lengt for heading. Further than this, the recess in the head enables the operator to quickly center thecutter over a rivet head for the purpose of cutting it off, the drop formation of the head acting to guide the same into position on the rivet.
  • a movable knife a fixed knife having a shoulder between its cutting blade and its back portion, a frame in which the movable knife works having a head for sustaining the fixed knife, said head having a socket to receive the fixed knife and having a portion integral therewith forming the bottom of the socket and extending below the plane of the cutting edge and engaging the shouldered portion. of the fixed knife, substantially as described.
  • a movable knife In combination in a bolt cutter, a movable knife, a fixed knife, a frame having a bottom. portion underlying the movable knife and having a head for holding the fixed knife, said head having a portion extending below the plane ofthe cutting edge of the knives and below a part of the fixed knife,

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)

Description

a W. WOOLGAR. BOLT CUTTER. APPLICATION FILED AUG. 20, 1909.
' 1 q um ntulllmlwih 1 1 'I' M UNITED sTATEs PATENT oEEioE.
WILLIAM WOOLGAR, OF SAGINAW, MICHIGAN.
Bizarr-CUTTER.
opecicaton of Letters Patent.
l Patented Dec. 29, 1908.
l Appueatid slee August 2o, 190s. serial Eminenza.
To all whom it may concern:
Be it known that I, WILLIAM W'OOLGAR,` a citizen of the United States, residing at Saginaw, Michigan, have invented certain new and useful improvements in Bolt-Cutters, of which the following is a specification.
My invention relates to bolt and rivet cutters, my object being to provide a strong kmfe. Fig. 4 is a rear view of the same.
Figs. 5 and 6 aresectional views on lines 5-5 and 6-6. f
In these drawings, 1, indicates the frame of the cutter within which slides a movable knife 2, this knife bein o erated through,
suitable connections wit t e'hand levers 3 which are pivoted to the frame at 4. The knife is beveled on its upper side and its lower face or cuttin edge works substantially in the plane o the lower edge of `the frame at the oint 5 where this frame is recessed. The rame is formed 'with an under wall'at 6, which terminates at the recess.
The fixed knife is supported in the head of the frame in a s ocket 6', and thissocket is formed by an end Wall 7 of the head, of the inwardly extending shoulders 8, which reach around in front of the shank 9 of the fixed knife, the bottom of the socket being formed by a flange or lip 10 cast with the head and extending beneath the fixed knife and terminating in an abrupt shoulder at 1l, forming one slde'of the recess 5, above referred to.
The fixed knife is formed with an abrupt shoulder at 12 between its blade ortion and its shank portion, this shoulder 'tting down over the underlying edge of the lip casting above described. The blade portion of the knife lies inthe same plane with the upper face of the recess 5 in the head, and thus .in
the same plane with the cutting edge of the movable knife. The fixed knife blade, like the movable knife blade is beveled on its upper side. The shank of the fixed blade is provided with inclined shoulders `13 on its side edges which 'engage Asimilarly inclined shoulders at the lower part of the socket of the head, vwhich receives the fixed blade. Furthermore, as shown in the rear view, Fig.
4, the shank of the knife blade is of \Ishape` at its lower end and the bottom of the socket is correspondingly formed. By this formation of the knife blade and its shank, the fixed knife is centered and held accurately in position. 4 It will be noticed that the casting of which the head is composed extends below the cutting level and under the shank of the fixed knife giving the head great strength at this point and enabling the apparatus to have greater ower applied thereto. This portion of the ead which reaches under `the fixed knife shank and abuts against the rear of the fixed knife blade substantially in the plane of its cutting edge gives the knife greater power and strength beyond the cutting edge. By-
the construction of the head described, it may be 'made light and small without decreasing its strength, thus making it possible to operate the cutter in difficult positions.
By means pfthedrop at the cutting head below the plane of thecutting edge, the device may'be readilyem loyed for cutting rivets of the proper lengt for heading. Further than this, the recess in the head enables the operator to quickly center thecutter over a rivet head for the purpose of cutting it off, the drop formation of the head acting to guide the same into position on the rivet.
` I claim as my invention:
1. In a bolt cutter a movable knife, a fixed knife having a shoulder between its cutting blade and its back portion, a frame in which the movable knife works having a head for sustaining the fixed knife, said head having a socket to receive the fixed knife and having a portion integral therewith forming the bottom of the socket and extending below the plane of the cutting edge and engaging the shouldered portion. of the fixed knife, substantially as described.
2. In combination in a bolt cutter, a movable knife, a fixed knife, a frame having a bottom. portion underlying the movable knife and having a head for holding the fixed knife, said head having a portion extending below the plane ofthe cutting edge of the knives and below a part of the fixed knife,
the said portion of the head and the bottom ico to receive the rivet heed or to determine the length of the rivet for heading, substantiaiiy substantially as described. as described. i In testimony whereof, I affix my signature 3. In combination in e boit ourttei', a frame g in presence of two witnesses. 5 homing a heed with a socket, therein formed I ,*ILLIAM TOOLGAR 'edges and with an inclined bottom portion, 10
with'aJ gf-shaped bottom, and inwardly .ex-
` tending lugs with inciines at the lower arts Witnesses:
of eid lugs, and a fixed knife having a s mnk i LINCOLN E. BRADT, 'with' inclines at the lower end of its side i )ARL C. ROGERS.
US44952908A 1908-08-20 1908-08-20 Bolt-cutter. Expired - Lifetime US907936A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US44952908A US907936A (en) 1908-08-20 1908-08-20 Bolt-cutter.

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US44952908A US907936A (en) 1908-08-20 1908-08-20 Bolt-cutter.

Publications (1)

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US907936A true US907936A (en) 1908-12-29

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