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US3533162A - Replaceable blade scissors - Google Patents

Replaceable blade scissors Download PDF

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Publication number
US3533162A
US3533162A US787483A US3533162DA US3533162A US 3533162 A US3533162 A US 3533162A US 787483 A US787483 A US 787483A US 3533162D A US3533162D A US 3533162DA US 3533162 A US3533162 A US 3533162A
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Prior art keywords
scissors
blades
shank
clamping plate
holes
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Expired - Lifetime
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US787483A
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Peter Pacitti
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B13/00—Hand shears; Scissors
    • B26B13/04—Hand shears; Scissors with detachable blades

Definitions

  • the present invention relates to a replaceable blade scissors, and more particularly to scissors having blades which can be easily removed and replaced without completely disassembling the scissors.
  • a scissors having replaceable blades is often desirable in order to permit blades used for different purposes to be used with a single handle, or to permit replacement of broken blades.
  • Such scissors must be capable of rigidly clamping the blades to the handles of the scissors, yet permit ease of releasing the blades. Also, the blades must be releasable without completely disassembling the scissors.
  • a scissors having a pair of handles which have mating overlapping shanks.
  • Each of the shanks has a recess in its mating surface.
  • the blades have bifurcated ends which fit in the recesses in the shanks.
  • a separate clamping plate fits in each recess between the bifurcated arms of the blades. Screws extend through each shank and are threaded into the clamping plates to clamp the clamping plates against the arms of the blades, and thus secure the blades to the handles.
  • a pivot pin extends through the shanks of the handles and the clamping plates so as to pivotally connect the two handles and their blades together.
  • FIG. 1 is a side view of the scissors of the present invention.
  • FIG. 2 is a sectional view taken along line 2- 2 of FIG. 1.
  • FIG. 3 is a sectional view taken along line 33 of FIG. 2.
  • FIG. 4 is an exploded perspective view of the connection between a blade and handle of the scissors of the present invention.
  • Scissors 10 comprises a pair of handles 12 and 14 pivotally connected together by a pivot pin 16, and a pair of blades 18 and 20. Each of the blades is releasably connected to a separate one of the handles 12 and 14 in the manner which will be described.
  • the handles 12 and 1 4 have finger receiving rings 22 and 24 respectively at one end, and shanks 26 and 28 respectively at their other end.
  • the handle shanks 26 and 28 have flat surfaces 26a and 280. respectively which are in overlapping contacting relation.
  • Recesses 30 and 32 are provided in the flat surfaces 26a and 28a respectively of the shanks 26 and 2 8.
  • the recesses 30 and 32 extend longitudinally along the fiat surfaces 2'64: and 28a from the free ends of the shanks 26 and 28.
  • the shanks 26 and 28 have pivot pin holes 34 and 36 respectively therethrough at the center of the recesses 30 and 32.
  • Shank 26 has a pair of holes 42a and 42b extending therethrough to the recess 30.
  • the holes 42a and 42b are arranged in longitudinal alignment along the shank at opposite sides of the pivot pin hole 34.
  • Shank 218 has a pair of holes 4411 and 44b extending therethrough to the recess 32.
  • the holes 440 and 44b are arranged in longitudinal alignment along the shank 28 at opposite sides of the pivot pin hole 36.
  • Rectangular clamping plates 46 and 48 are seated in the recesses 30 and 32 respectively in the shanks 26 and 28.
  • the clamping plates 46 and 48 are of the same length as the recesses 30* and 32, but are narrower than the width of the recesses.
  • the side edges 46a and 46b of the clamping plate 46 and the side edges 48a and 48b of the clamping plate 48 are tapered inwardly toward the surface of the respective clamping plates which engages the bottom of the respective recesses 30 and 32 (see FIG. 3).
  • Pivot pin receiving holes 50* and 52 extend through the center of the clamping plates 46 and 48 respectively.
  • a pair of cylindrical bosses 54a and 54b project from the inner surface of the clamping plate 46 at opposite sides of the hole 50, and fit in the holes 42a and 42b respectively in the shank 26 so as to properly position the clamping plate 46 in the recess 30.
  • the bosses 54a and 54b have threaded holes 56a and 56b respectively extending therethrough.
  • a pair of cylindrical bosses 58a and 58b project from the inner surface of the clamping plate 48 at opposite sides of the holes 52 and fit in the holes 44a and 44b respectively in the shank 28 so as to properly position the clamping plate 48 in the recess 32.
  • the bosses 5 8a and 58b have threaded holes 60a and 60b respectively extending therethrough.
  • Screws 62a and 62b extend through the holes 4 2a and 42b respectively in the shank 26 from the outer surface of the shank, and are threaded in the holes 56a and 56b respectively in the clamping plate 46 so as to secure the clamping plate 46 to the shank 26.
  • Screws 64a and 64b extend through the holes 44a and 44b respectively in the shank 28 from the outer surface of the shank, and are threaded in the holes 60a and 60b respectively in the clamping plate 48 so as to secure the clamping plate 48 to the shank 28.
  • the back end of the blade 18 is bifurcated to provide a pair of spaced, parallel arms 66 and 68 extending longitudinally from the back end of the blade.
  • the arms 66 and 68 fit in the recess 30 in the shank 26 between the side edges 46a and 46b of the clamping plate 46 and the wall of the recess.
  • the inner surfaces 66a and 68a of the arms 66 and 68 are tapered to mate with the tapered side edges 46a and 46b of the clamping plate 46.
  • the clamping plate 46 is pulled against the bottom of the recess 30 so that the side edges 46a and 46b of the clamping plate 46 engage the side edges 66a and 68b of the arms 66 and 68.
  • the back end of the blade 20 is bifurcated to provide a pair of spaced, parallel arms 70 and 72.
  • the arms 70 and 72 fit in the recess 32 in the shank 28 between the clamping plate 28 and the wall of the recess 32.
  • the inner surfaces 70a and 72a of the arms 70 and 72 are tapered to mate with the tapered side edges 48a and 48b of the clamping plate 48.
  • the clamping plate engages the arms 70 and 72 to secure the blade 20 to the handle 14.
  • the pivot pin 16 comprises a threaded shank 74 and a cylindrical head 76 on the end of the shank.
  • the shank 74 extends through the holes 50 and 52 in the clamping plates 46 and 48, and is threaded into the nut 38.
  • the head 76 fits in and engages the bearing ring 40.
  • the screws 62a and 62b are loosened to release the force of the clamping plate 46 against the arms 66 and 68 of the plate 18.
  • the blade 18 can then be pulled out of the recess 30.
  • the arms 66 and 68 are reinserted into the recess 30 and the screws 62a and 62b tightened to pull the clamping plate 46 tightly against the arms 66 and 68.
  • the blade 20 can be similarly released from the handle 14- by loosening the screws 64a and 64b.
  • Replaceable blade scissors comprising a pair of handles having at one end flat surfaces which are in overlapping relation, a separate recess in each of said fiat surfaces extending from the one end of the respective handle, a pair of blades, each of said blades having a pair of spaced parallel arms extending from one end thereof and fitting into a recess in a separate one of the handles, a separate clamping plate in each of said recesses engaging the arms of the blade which are in said recess, separate means extending through each of said handles and engaging the clamping plate in the recess in the handle to releasably hold the clamping plates against the arms of the blades and secure the blades to the respective handles, and means pivotally securing the handles together.
  • each of the handles has a shank on the one end, and the flat surfaces are on the shanks.
  • Scissors in accordance with claim 2 in which the means releasably holding the clamping plates against the arms of the blades comprises separate screws extending through holes in the shanks and threaded into holes in the clamping plates.
  • Scissors in accordance with claim 3 in which the means pivotally securing the handles together comprises a pivot pin extending through the shanks and the clamping plates.
  • Scissors in accordance with claim 4 including two screws extending through holes in each of the shanks and threaded into holes in the clamping plates, the screws in each of the shanks being positioned in longitudinal alignment at opposite sides of the pivot pin.
  • each of the clamping plates has a pair of hubs projecting therefrom and fitting into the holes in the respective shank, and the screws are threaded into holes in the hubs.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Scissors And Nippers (AREA)

Description

Oct. 13, 1970 P. PACITTI/ 3,533,162
REPLACEABLE BLADE SCISSORS Filed Dec. 27, 1968 FIG. 2 64b 3,20
74 2a 32 580 44b I ([280 f l8 Q 541, I 260 FIG 3 INVENTOR PETER PACITT/ ATTORNE Y United States Patent 3,533,162 REPLACEABLE BLADE SCISSORS Peter Pacitti, 1201 Caldwell Ave., Cherry Hill, NJ. 08034 Filed Dec. 27, 1968, Ser. No. 787,483 Int. Cl. B26]: 13/04 US. Cl. 30--260 7 Claims ABSTRACT OF THE DISCLOSURE A scissors having blades which can be easily replaced without disassembling the scissors. Each of the blades has a bifurcated end [which fits into a recess in the inner surface of the shank of the handles of the scissors. A clamping plate fits in the recess between the bifurcated arms of the blade, and screws extend through the shank of the handle and are threaded into the clamping plate to clamp the clamping plate against the bifurcated arms of the blade.
The present invention relates to a replaceable blade scissors, and more particularly to scissors having blades which can be easily removed and replaced without completely disassembling the scissors.
A scissors having replaceable blades is often desirable in order to permit blades used for different purposes to be used with a single handle, or to permit replacement of broken blades. Such scissors must be capable of rigidly clamping the blades to the handles of the scissors, yet permit ease of releasing the blades. Also, the blades must be releasable without completely disassembling the scissors.
It is an object of the present invention to provide a novel scissors having replaceable blades.
It is another object of the present invention to provide scissors having replaceable blades wherein the blades are rigidly secured to the handles, yet easily releasable from the handles without completely disassembling the scissors.
These objects are achieved by a scissors having a pair of handles which have mating overlapping shanks. Each of the shanks has a recess in its mating surface. The blades have bifurcated ends which fit in the recesses in the shanks. A separate clamping plate fits in each recess between the bifurcated arms of the blades. Screws extend through each shank and are threaded into the clamping plates to clamp the clamping plates against the arms of the blades, and thus secure the blades to the handles. A pivot pin extends through the shanks of the handles and the clamping plates so as to pivotally connect the two handles and their blades together.
For the purpose of illustrating the invention there is shown in the drawings a form which is presently preferred; it being understood, however, that this invention is not limited to the precise arrangements and instrumentalities shown.
FIG. 1 is a side view of the scissors of the present invention.
FIG. 2 is a sectional view taken along line 2- 2 of FIG. 1.
FIG. 3 is a sectional view taken along line 33 of FIG. 2.
FIG. 4 is an exploded perspective view of the connection between a blade and handle of the scissors of the present invention.
Referring to the drawings, the scissors of the present invention is generally designated as Scissors 10 comprises a pair of handles 12 and 14 pivotally connected together by a pivot pin 16, and a pair of blades 18 and 20. Each of the blades is releasably connected to a separate one of the handles 12 and 14 in the manner which will be described.
3,533,162 Patented Oct. 13, 1970 The handles 12 and 1 4 have finger receiving rings 22 and 24 respectively at one end, and shanks 26 and 28 respectively at their other end. The handle shanks 26 and 28 have flat surfaces 26a and 280. respectively which are in overlapping contacting relation. Recesses 30 and 32 are provided in the flat surfaces 26a and 28a respectively of the shanks 26 and 2 8. The recesses 30 and 32 extend longitudinally along the fiat surfaces 2'64: and 28a from the free ends of the shanks 26 and 28. The shanks 26 and 28 have pivot pin holes 34 and 36 respectively therethrough at the center of the recesses 30 and 32. A nut 38 is secured in the pivot pin hole 36 in the shank 28, and a bearing ring 40 is secured in the pivot pin hole 34 in the shank 26. Shank 26 has a pair of holes 42a and 42b extending therethrough to the recess 30. The holes 42a and 42b are arranged in longitudinal alignment along the shank at opposite sides of the pivot pin hole 34. Shank 218 has a pair of holes 4411 and 44b extending therethrough to the recess 32. The holes 440 and 44b are arranged in longitudinal alignment along the shank 28 at opposite sides of the pivot pin hole 36.
Rectangular clamping plates 46 and 48 are seated in the recesses 30 and 32 respectively in the shanks 26 and 28. The clamping plates 46 and 48 are of the same length as the recesses 30* and 32, but are narrower than the width of the recesses. The side edges 46a and 46b of the clamping plate 46 and the side edges 48a and 48b of the clamping plate 48 are tapered inwardly toward the surface of the respective clamping plates which engages the bottom of the respective recesses 30 and 32 (see FIG. 3). Pivot pin receiving holes 50* and 52 extend through the center of the clamping plates 46 and 48 respectively. A pair of cylindrical bosses 54a and 54b project from the inner surface of the clamping plate 46 at opposite sides of the hole 50, and fit in the holes 42a and 42b respectively in the shank 26 so as to properly position the clamping plate 46 in the recess 30. The bosses 54a and 54b have threaded holes 56a and 56b respectively extending therethrough. A pair of cylindrical bosses 58a and 58b project from the inner surface of the clamping plate 48 at opposite sides of the holes 52 and fit in the holes 44a and 44b respectively in the shank 28 so as to properly position the clamping plate 48 in the recess 32. The bosses 5 8a and 58b have threaded holes 60a and 60b respectively extending therethrough.
Screws 62a and 62b extend through the holes 4 2a and 42b respectively in the shank 26 from the outer surface of the shank, and are threaded in the holes 56a and 56b respectively in the clamping plate 46 so as to secure the clamping plate 46 to the shank 26. Screws 64a and 64b extend through the holes 44a and 44b respectively in the shank 28 from the outer surface of the shank, and are threaded in the holes 60a and 60b respectively in the clamping plate 48 so as to secure the clamping plate 48 to the shank 28.
As shown in FIG. 4, the back end of the blade 18 is bifurcated to provide a pair of spaced, parallel arms 66 and 68 extending longitudinally from the back end of the blade. The arms 66 and 68 fit in the recess 30 in the shank 26 between the side edges 46a and 46b of the clamping plate 46 and the wall of the recess. As shown in FIG. 3, the inner surfaces 66a and 68a of the arms 66 and 68 are tapered to mate with the tapered side edges 46a and 46b of the clamping plate 46. Thus, when the screws 62a and 62b are tightened, the clamping plate 46 is pulled against the bottom of the recess 30 so that the side edges 46a and 46b of the clamping plate 46 engage the side edges 66a and 68b of the arms 66 and 68. This clamps the blade 18 tightly to the handle 12. Likewise, the back end of the blade 20 is bifurcated to provide a pair of spaced, parallel arms 70 and 72. The arms 70 and 72 fit in the recess 32 in the shank 28 between the clamping plate 28 and the wall of the recess 32. The inner surfaces 70a and 72a of the arms 70 and 72 are tapered to mate with the tapered side edges 48a and 48b of the clamping plate 48. Thus, the clamping plate engages the arms 70 and 72 to secure the blade 20 to the handle 14.
The pivot pin 16 comprises a threaded shank 74 and a cylindrical head 76 on the end of the shank. The shank 74 extends through the holes 50 and 52 in the clamping plates 46 and 48, and is threaded into the nut 38. The head 76 fits in and engages the bearing ring 40. Thus, the pivot pin 16 secures the handles 12 and 14 together, but permits pivotation of one handle with respect to the other handle.
To release the blade 18 from the handle 12, the screws 62a and 62b are loosened to release the force of the clamping plate 46 against the arms 66 and 68 of the plate 18. The blade 18 can then be pulled out of the recess 30. To replace the blade 18, the arms 66 and 68 are reinserted into the recess 30 and the screws 62a and 62b tightened to pull the clamping plate 46 tightly against the arms 66 and 68. The blade 20 can be similarly released from the handle 14- by loosening the screws 64a and 64b. Thus, it can be seen that the scissors 10 of the present invention provides for the release and replacement of the blades with ease and without completely disassembling the scissors.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof and, accordingly, reference should be made to the appended claims, rather than to the foregoing specification as indicating the scope of the invention.
What is being claimed is:
1. Replaceable blade scissors comprising a pair of handles having at one end flat surfaces which are in overlapping relation, a separate recess in each of said fiat surfaces extending from the one end of the respective handle, a pair of blades, each of said blades having a pair of spaced parallel arms extending from one end thereof and fitting into a recess in a separate one of the handles, a separate clamping plate in each of said recesses engaging the arms of the blade which are in said recess, separate means extending through each of said handles and engaging the clamping plate in the recess in the handle to releasably hold the clamping plates against the arms of the blades and secure the blades to the respective handles, and means pivotally securing the handles together.
2. Scissors in accordance with claim 1 in which each of the handles has a shank on the one end, and the flat surfaces are on the shanks.
3. Scissors in accordance with claim 2 in which the means releasably holding the clamping plates against the arms of the blades comprises separate screws extending through holes in the shanks and threaded into holes in the clamping plates.
4. Scissors in accordance with claim 3 in which the means pivotally securing the handles together comprises a pivot pin extending through the shanks and the clamping plates.
5. Scissors in accordance with claim 4 including two screws extending through holes in each of the shanks and threaded into holes in the clamping plates, the screws in each of the shanks being positioned in longitudinal alignment at opposite sides of the pivot pin.
6. Scissors in accordance with claim 5 in which each of the clamping plates has a pair of hubs projecting therefrom and fitting into the holes in the respective shank, and the screws are threaded into holes in the hubs.
7. Scissors in accordance with claim 6 in which the side edges of each of the clamping plates are tapered inwardly toward the bottom of the respective recess, the inner side edges of the arms of each blade are tapered to mate with the tapered side edges of the respective clamping plate, and the tapered side edges of the clamping plates engage the tapered side edges of the blade arms to secure the blades to the handles.
References Cited UNITED STATES PATENTS 130,184 8/ 1872 Braithewaite 30260 1,645,035 10/1927 Zeidler 30-260 2,575,861 11/1951 Bray 30260 2,758,372 8/1956 Gammons 30-260 ROBERT C. RIORDON, Primary Examiner J. C. PETERS, Assistant Examiner
US787483A 1968-12-27 1968-12-27 Replaceable blade scissors Expired - Lifetime US3533162A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531289A (en) * 1983-01-28 1985-07-30 F. M. Brick Industries, Inc. High-power rescue tool
US4734983A (en) * 1986-09-04 1988-04-05 Brick Francis M Cutting tool having single moving blade
USRE33002E (en) * 1983-01-28 1989-08-01 F. M. Brick Industries, Inc. High-power rescue tool
US5860215A (en) * 1996-08-07 1999-01-19 Roskam; Scott H. Scissors using a reversed handle orientation with a levered handle
US6041530A (en) * 1997-11-18 2000-03-28 Acme United Corporation Indicia displaying stationery products
US20030140502A1 (en) * 2001-11-13 2003-07-31 Acme United Corporation Scissors
US20070022613A1 (en) * 2001-11-13 2007-02-01 David Carpenter Scissors
US20080034594A1 (en) * 2006-08-14 2008-02-14 Kuang-Pin Wang Scissors with scales

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US130184A (en) * 1872-08-06 Improvement in shears
US1645035A (en) * 1925-08-21 1927-10-11 Hurlburt Res Corp Scissors
US2575861A (en) * 1951-01-05 1951-11-20 Olin B Bray Detachable blade and handle for shears
US2758372A (en) * 1955-11-01 1956-08-14 Elizabeth Gammons Scissors

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US130184A (en) * 1872-08-06 Improvement in shears
US1645035A (en) * 1925-08-21 1927-10-11 Hurlburt Res Corp Scissors
US2575861A (en) * 1951-01-05 1951-11-20 Olin B Bray Detachable blade and handle for shears
US2758372A (en) * 1955-11-01 1956-08-14 Elizabeth Gammons Scissors

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531289A (en) * 1983-01-28 1985-07-30 F. M. Brick Industries, Inc. High-power rescue tool
USRE33002E (en) * 1983-01-28 1989-08-01 F. M. Brick Industries, Inc. High-power rescue tool
US4734983A (en) * 1986-09-04 1988-04-05 Brick Francis M Cutting tool having single moving blade
US5860215A (en) * 1996-08-07 1999-01-19 Roskam; Scott H. Scissors using a reversed handle orientation with a levered handle
US6041530A (en) * 1997-11-18 2000-03-28 Acme United Corporation Indicia displaying stationery products
US6263599B1 (en) * 1997-11-18 2001-07-24 Acme United Corporation Indicia displaying stationery products
US20030140502A1 (en) * 2001-11-13 2003-07-31 Acme United Corporation Scissors
US20070022613A1 (en) * 2001-11-13 2007-02-01 David Carpenter Scissors
US20080034594A1 (en) * 2006-08-14 2008-02-14 Kuang-Pin Wang Scissors with scales

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