US1625778A - Knife with detachable blade - Google Patents

Knife with detachable blade Download PDF

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Publication number
US1625778A
US1625778A US715222A US71522224A US1625778A US 1625778 A US1625778 A US 1625778A US 715222 A US715222 A US 715222A US 71522224 A US71522224 A US 71522224A US 1625778 A US1625778 A US 1625778A
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United States
Prior art keywords
blade
handle
jaws
knife
sleeve
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Expired - Lifetime
Application number
US715222A
Inventor
William E Nickerson
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Gillette Co LLC
Original Assignee
Gillette Safety Razor Co
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 Gillette Safety Razor Co filed Critical Gillette Safety Razor Co
Priority to US715222A priority Critical patent/US1625778A/en
Application granted granted Critical
Publication of US1625778A publication Critical patent/US1625778A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/3209Incision instruments
    • A61B17/3211Surgical scalpels, knives; Accessories therefor
    • A61B17/3213Surgical scalpels, knives; Accessories therefor with detachable blades
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00Chucks or sockets
    • Y10T279/17Socket type
    • Y10T279/17231Pivoted jaws
    • Y10T279/17239Moving-cam actuator
    • Y10T279/17256Reciprocating cam sleeve

Definitions

  • My invention relates to knives of the type in which the blade is readily detachable from the handle, so that after a blade has become unfit for further use it can be removed and replaced by another.
  • My invention is intended to provide an improved knife of this character which will be particularly adapted for use in performing surgical operations, and resides in certain features of which the preferred construction is hereinafter described in connection with the accon'ipanying drawing, in whichl igure l is a side elevation of a surgical knife made in accordance with my invention, ready for use;
  • l igure 2 is a side elevation, partly in section, showing the blade-holding portion of the knife with the blade-clamping jaws open;
  • l igure 3 is aside elevation of a. blade adapted for use in the blade holder illus trated in Figures 1 and 2;
  • Figure l is a transverse section on the line 4- 4 in Figure 1; and c Figure 5 shows the front end of the blade holder in longitudinal section, with the jaws closed and the blade held between them.
  • the blade-holding portion :2 of the knife illustrated comprises two jaws, of which the upper jaw is integral with the handle and the lower jaw 3 is conneetedat its rear end thereto by means of apivot 4, so ,thatthe ilront ends of the awe can be separated for the insertion or removal of the blade 5, shown separately in Figure 3.
  • the blade has acutting edge 6 and an elongated shank Tt-thich tapers rearwardly and is adapted to be grasped by the jaws of the blade holder, each jaw being provided with a longitudinal groove 8 to receive the corresponding edge t1?
  • the blank shank and the parts are so pro 'iortioncd that when the blade is inserted in the holder, ready for use, the entire length of the cutting edge 6 is exposed in "front of the lower jaw 3.
  • I provide one of the jawsof the holder, for example the lower jaw 23, with a recess 9 adapted to receive and fit a corresponding enlargement 10 at the rear end ofithe blade, and-for holdin the jaws closed I employ a sleeve 11 adapted'to slide on the front portion of the handle and to embrace the jaws KNIFE WITH DETACI-IABLE BLADE.
  • the rearward movement of the sleeve 11 on the handle is limited by a suitable stop, such as 'a pin 12 passing transversely througl'i the handle in such position that when the sleeve is in contact with it the jaws are free to open, and preferably the upper and lower edges of the sleeve are smooth while its sides are corrugatedor otherwise roughened externally, as indicated at 13, for the purpose of ei'iabling the user to grip the sleeve firmly between the thumb and forefinger when forcing it toward the blade.
  • the pai'ttsabove described are assembled by first pass ng the upper aw throughthe sleeve 11 and sliding the latter backward against ,the stop 12, ,then' engaging-the IOU release the blade shank, whereupon the parts of the handle may be taken apart if desired, as above explained.
  • a knife of the character described the combination of a blade having an elongated shank, and a blade holder comprising a handle provided at its front end with an integral upper jaw having in its under edge a longitudinal groove adapted to receive the greater part of the upper edge of the blade and give lateral rigidity thereto, a lower jaw hinged at its rear end to the handle, and a clamping sleeve adapted to slide on the jaws in front of the handle, the outer edges of the jaws being provided with cam surfaces adapted to be engaged by the sleeve and to limit its clamping movement, whereby the jaws are caused to grip the blade firmly between them.
  • a knife of the character described the combination of a blade having an elongated shank, and a blade holder comprising a handle provided at its front end with an integral upper jaw having in its under edge a longitudinal groove adapted to receive the upper edge of the blade, a lower jaw hinged at its rear end to the handle and detachable therefrom when open, and a clamping sleeve adapted to slide on the jaws and to engage cam surfaces on their outer edges when moved forward thereon, whereby they are caused to grip the blade between them, said sleeve being removable from the upper jaw after the lower jaw has been detached.
  • a knife of the character described the combination of a blade having a rearwardly-tapering shank and an enlargement at the rear end of the shank, and a blade holder comprising a handle provided at its front end with an integral upper jaw having in its under edge a longitudinal groove adapted to receive the upper edge of the blade, a lower jaw hinged at its rear end to the handle and provided with a recess adapted to receive the enlargement on the blade shank, and a clamping sleeve adapted to slide on the jaws in front of the handle, the outer edges of said jaws being provided with cam surfaces adapted to be engaged by the sleeve and to limit its forward movement, whereby they are caused to grip the blade firmly between them.
  • a blade holder comprising a handle provided at its front end with an integral upper jaw having a longitudinal groove in its under edge, a lower jaw hinged at its rear end to the front end of the handle and detachable therefrom when open, and a clamping sleeve adapted to slide on the jaws and to move rearward on the handle to a position behind the hinge of the lower jaw, the outer edges of said jaws being provided with ram surfaces adapted to be engaged by the sleevr on its forward movement and the sleeve being removable over the upper jaw after the lower jaw has been detached.
  • a blade holder comprising a handle provided at its front end with an integral upper jaw having a longitudinal groove in its under edge, a lower jaw hinged at its rear end to the front end of the handle and provided in its upper edge with a longitudinal groove and a recess at the rear end of said groove, and a clamping sleeve adapted to slide on the jaws and to move rearward on the handle to a position behind the hinge of the lower jaw, the outer edges of said jaws being provided with cam surfaces adapted to be engaged by the sleeve and to limit its forward movement.
  • a blade holder comprising a handle provided at its front end with an integral upper jaw having a longitudinal groove in its under edge, a lower jaw hinged at its rear end to the front end of the handle, and a claniping sleeve adapted to slide on the jaws and to engage cam surfaces on their outer edges when moved forward thereon, said sleeve be ing provided externally with smooth upper and lower edges and with roughened side surfaces.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Knives (AREA)

Description

Apnl w. E. NICKERSON KNIFE WITH DETACHABLE BLADE Filed May 22, 1924 m 8. Misha-:0-
Patented Apr. 19,1927.
UNITED STATES PATENT FFICE.
WILLIAM E. NICKEBSON, OF BOSTON, MASSACHUSETTS, ASSIGNOB TO GILLETTE SAFETY RAZOR COMPANY, 0;? BOSTON, MASSACHUSETTS, A CORPORATION OF :onnawaia-n.
Application filed llllay 22,
My invention relates to knives of the type in which the blade is readily detachable from the handle, so that after a blade has become unfit for further use it can be removed and replaced by another. My invention is intended to provide an improved knife of this character which will be particularly adapted for use in performing surgical operations, and resides in certain features of which the preferred construction is hereinafter described in connection with the accon'ipanying drawing, in whichl igure l is a side elevation of a surgical knife made in accordance with my invention, ready for use;
l igure 2 is a side elevation, partly in section, showing the blade-holding portion of the knife with the blade-clamping jaws open;
l igure 3 is aside elevation of a. blade adapted for use in the blade holder illus trated in Figures 1 and 2;
Figure l is a transverse section on the line 4- 4 in Figure 1; and c Figure 5 shows the front end of the blade holder in longitudinal section, with the jaws closed and the blade held between them.
The blade-holding portion :2 of the knife illustrated comprises two jaws, of which the upper jaw is integral with the handle and the lower jaw 3 is conneetedat its rear end thereto by means of apivot 4, so ,thatthe ilront ends of the awe can be separated for the insertion or removal of the blade 5, shown separately in Figure 3. The blade has acutting edge 6 and an elongated shank Tt-thich tapers rearwardly and is adapted to be grasped by the jaws of the blade holder, each jaw being provided with a longitudinal groove 8 to receive the corresponding edge t1? the blank shank and the parts are so pro 'iortioncd that when the blade is inserted in the holder, ready for use, the entire length of the cutting edge 6 is exposed in "front of the lower jaw 3. In order to hold the b ladeimmovable with respect to the holder in the direction of its length I provide one of the jawsof the holder, for example the lower jaw 23, with a recess 9 adapted to receive and fit a corresponding enlargement 10 at the rear end ofithe blade, and-for holdin the jaws closed I employ a sleeve 11 adapted'to slide on the front portion of the handle and to embrace the jaws KNIFE WITH DETACI-IABLE BLADE.
1924. l Serial No. 715,222.
tional engagement therewith.
The rearward movement of the sleeve 11 on the handle is limited by a suitable stop, such as 'a pin 12 passing transversely througl'i the handle in such position that when the sleeve is in contact with it the jaws are free to open, and preferably the upper and lower edges of the sleeve are smooth while its sides are corrugatedor otherwise roughened externally, as indicated at 13, for the purpose of ei'iabling the user to grip the sleeve firmly between the thumb and forefinger when forcing it toward the blade. The location of the corrugated surfaces on the sides of the sleeve, leaving its top and bottom smooth, hasjtheadvantage that the user is thereby led to grip the sleeve by its sides when operating it, so that if histhumb or finger slips it is not lil; 1y to come in contact with'thecutting'edge of the blade. I also prefer to"connect the lower jaw 23 to the pivots by givingythe rear .end of the jaw the shape of a hook let, as shown in Figure L so that t-he jaw is swung downward sufficiently it can be detached from the handle 2 by disengaging the hook ll from the pivot 4l,whereupon the sleeve 11 an be reniovedlby sliding has the front endof the upper jaw. l
The pai'ttsabove described are assembled by first pass ng the upper aw throughthe sleeve 11 and sliding the latter backward against ,the stop 12, ,then' engaging-the IOU release the blade shank, whereupon the parts of the handle may be taken apart if desired, as above explained.
It will be apparent from the foregoing description that when the blade is clamped between the jaws it will not only be held immovable but will be rendered practically as rigid as the handle itself by reason of the stiii'eniu g effect of the grooved jaws in which the edge portions of the blade shank are held, that by manipulating the sleeve and jaws the blade can be removed without touching it, and that all lheparts can be readily separated and put together, and thoroughly sterilized while disassembled, all of these characteristics being important in the use of surgical knives. The specific form of blade illui-ztrated is of course to be regarded merely as one example of a surgical blade. and in practice a set of blades of various sizes and having cutting edges of various contours will be provided with each handle and adapted for individual use therein. The details of construction of the holder, as well as the shape of the blade itself, may evidently be modified considerably without departing from my invention particularly in respect to the shape and arrangement of the blade-clan'iping jaws and the means employed for holding them together and positioning a blade between them.
I claim:
1. In a knife of the character described, the combination of a blade having an elongated shank, and a blade holder comprising a handle provided at its front end with an integral upper jaw having in its under edge a longitudinal groove adapted to receive the greater part of the upper edge of the blade and give lateral rigidity thereto, a lower jaw hinged at its rear end to the handle, and a clamping sleeve adapted to slide on the jaws in front of the handle, the outer edges of the jaws being provided with cam surfaces adapted to be engaged by the sleeve and to limit its clamping movement, whereby the jaws are caused to grip the blade firmly between them.
2. In a knife of the character described, the combination of a blade having an elongated shank, and a blade holder comprising a handle provided at its front end with an integral upper jaw having in its under edge a longitudinal groove adapted to receive the upper edge of the blade, a lower jaw hinged at its rear end to the handle and detachable therefrom when open, and a clamping sleeve adapted to slide on the jaws and to engage cam surfaces on their outer edges when moved forward thereon, whereby they are caused to grip the blade between them, said sleeve being removable from the upper jaw after the lower jaw has been detached.
3. In a knife of the character described, the combination of a blade having a rearwardly-tapering shank and an enlargement at the rear end of the shank, and a blade holder comprising a handle provided at its front end with an integral upper jaw having in its under edge a longitudinal groove adapted to receive the upper edge of the blade, a lower jaw hinged at its rear end to the handle and provided with a recess adapted to receive the enlargement on the blade shank, and a clamping sleeve adapted to slide on the jaws in front of the handle, the outer edges of said jaws being provided with cam surfaces adapted to be engaged by the sleeve and to limit its forward movement, whereby they are caused to grip the blade firmly between them.
4. In a knife of the character described, a blade holder comprising a handle provided at its front end with an integral upper jaw having a longitudinal groove in its under edge, a lower jaw hinged at its rear end to the front end of the handle and detachable therefrom when open, and a clamping sleeve adapted to slide on the jaws and to move rearward on the handle to a position behind the hinge of the lower jaw, the outer edges of said jaws being provided with ram surfaces adapted to be engaged by the sleevr on its forward movement and the sleeve being removable over the upper jaw after the lower jaw has been detached.
5. In a knife of the character described, a blade holder comprising a handle provided at its front end with an integral upper jaw having a longitudinal groove in its under edge, a lower jaw hinged at its rear end to the front end of the handle and provided in its upper edge with a longitudinal groove and a recess at the rear end of said groove, and a clamping sleeve adapted to slide on the jaws and to move rearward on the handle to a position behind the hinge of the lower jaw, the outer edges of said jaws being provided with cam surfaces adapted to be engaged by the sleeve and to limit its forward movement.
6. In a knife of the character described, a blade holder comprising a handle provided at its front end with an integral upper jaw having a longitudinal groove in its under edge, a lower jaw hinged at its rear end to the front end of the handle, and a claniping sleeve adapted to slide on the jaws and to engage cam surfaces on their outer edges when moved forward thereon, said sleeve be ing provided externally with smooth upper and lower edges and with roughened side surfaces.
Signed at Boston, Mass, this 19th day of May, 1924.
IVILLIAM E. NICKERSON.
US715222A 1924-05-22 1924-05-22 Knife with detachable blade Expired - Lifetime US1625778A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121952A (en) * 1961-03-13 1964-02-25 John L Schohl Culinary implement
US5312429A (en) * 1992-07-27 1994-05-17 Devon Industries, Inc. Scalpel handle and blade release assembly
US6565100B1 (en) * 1998-10-07 2003-05-20 Michael Joseph Marshall Hand gripping tool
US20070156160A1 (en) * 2005-12-30 2007-07-05 Petersen Thomas D Handle with removable disposable surgical blade and blade removal system including disposal container
WO2020260054A1 (en) 2019-06-25 2020-12-30 Aesculap Ag Medical hand-held instrument with a replaceable blade
US11338456B2 (en) * 2019-02-28 2022-05-24 Belair Instrument Company, Llc TrimSafe histology radius blade grossing knife
US12005597B2 (en) 2020-10-26 2024-06-11 Cancer Diagnostics, Inc. Trimming knife

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121952A (en) * 1961-03-13 1964-02-25 John L Schohl Culinary implement
US5312429A (en) * 1992-07-27 1994-05-17 Devon Industries, Inc. Scalpel handle and blade release assembly
US6565100B1 (en) * 1998-10-07 2003-05-20 Michael Joseph Marshall Hand gripping tool
US20070156160A1 (en) * 2005-12-30 2007-07-05 Petersen Thomas D Handle with removable disposable surgical blade and blade removal system including disposal container
US7647704B2 (en) * 2005-12-30 2010-01-19 Petersen Thomas D Handle with removable disposable surgical blade
US11338456B2 (en) * 2019-02-28 2022-05-24 Belair Instrument Company, Llc TrimSafe histology radius blade grossing knife
US20220281126A1 (en) * 2019-02-28 2022-09-08 Belair Instrument Company, Llc Trimsafe histology radius blade grossing knife
US11738473B2 (en) * 2019-02-28 2023-08-29 Belair Instrument Company, Llc Trimsafe histology radius blade grossing knife
WO2020260054A1 (en) 2019-06-25 2020-12-30 Aesculap Ag Medical hand-held instrument with a replaceable blade
US12005597B2 (en) 2020-10-26 2024-06-11 Cancer Diagnostics, Inc. Trimming knife

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