US2399677A - Power saw for cutting plaster casts - Google Patents

Power saw for cutting plaster casts Download PDF

Info

Publication number
US2399677A
US2399677A US541024A US54102444A US2399677A US 2399677 A US2399677 A US 2399677A US 541024 A US541024 A US 541024A US 54102444 A US54102444 A US 54102444A US 2399677 A US2399677 A US 2399677A
Authority
US
United States
Prior art keywords
saw
gauge
motor
cutting
plaster casts
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
US541024A
Inventor
Frank E Hood
Hood James Edgar
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US541024A priority Critical patent/US2399677A/en
Application granted granted Critical
Publication of US2399677A publication Critical patent/US2399677A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B23D59/00—Accessories specially designed for sawing machines or sawing devices
    • B23D59/006—Accessories specially designed for sawing machines or sawing devices for removing or collecting chips
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F15/00—Auxiliary appliances for wound dressings; Dispensing containers for dressings or bandages
    • A61F15/02—Devices for cutting bandages of any kind, e.g. shears, cast-cutting saws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/0046—Devices for removing chips by sucking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B9/00—Portable power-driven circular saws for manual operation
    • B27B9/02—Arrangements for adjusting the cutting depth or the amount of tilting
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/079—Removable debris receptacle
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/083—Fan coaxial with cutter

Definitions

  • the present invention relates to improvements in power saws for cutting plaster casts, and its principal object is to provide. a. saw of the char.- acter described whereby a cast applied to a patient may be cut speedily for removal without. any danger of. injuring the skin of. the patient.
  • a further object of the invention is to provide,
  • a protecting foot adapted to ride between the skin, of the patient and the cast so as to prevent the saw from coming, in contact with the skin of the patient.
  • Figure 1 shows a top plan view of our power saw
  • Figure 3 a fragmentary plan view of the end portion of the power saw with certain parts re-- moved.
  • our power saw I comprises, in its principal features, a motor 2, a motor shaft 3 having a rotary saw 4 at one end and a fan 5 at the other end, a foot 6 underneath the saw, a depth gauge 1 adjacent the say, a discharge conduit 8 for the dust, and a handle 9 whereby the whole device may be manipulated.
  • the motor housing has a tapered extension Ill coming to within close proximity of the saw and serving to furnish a bearing for the motor shaft near the saw. It also has a rectangular frame II projecting therefrom in the direction of the saw and above the axis thereof, the frame comprising .long'itudinallbars l2 and I3 and two crossmembers l4 and 15 disposed on opposite sides of the saw.
  • The. frame H supports. a hood it over the saw. It has a lateral extension ll, substantially in the plane of the saw, and this extension carries, with freedom of vertical adjustment, as by the screw and slot arrangement, shown at l 8, a leg I9, which is curved toward the saw so as to support the foot 5 underneath the saw.
  • the foot-t protects the skin of the patient for longitudinal cuts, but may be removed for vertical cuts into the plaster, when it is desired to out a. window into the cast.
  • the adjustment takes care of saws of different sizes.
  • the front frame member M which is widened in its central portion, as at 20, carries the depth gauge 'i made in the form of a rectangular frame 2
  • the gauge may be adjusted by means of a screw 25 revolvably anchored in the frame member l4 and threaded into the top bar 23.
  • the discharge tube 8 for the saw dust is arranged alongside of the motor housing and has a front elbow 2B leaning toward the lower edge of the saw so as to receive the saw dust. It is formed with a cut-out 21 in the edge facing the saw to provide better access for the saw dust.
  • the front elbow is supported by an extension 28 of the gauge shoe 24 so as to be adjustable therewith.
  • the rear end of the discharge conduit connects, through an elbow 30, to the central intake 3
  • the tangential outlet 33 has a suitable dust receiving bag 34 secured thereto.
  • the elbow 30 is revolvable in the intake 3
  • the frame I I has a bracket 38 rising therefrom between the saw and the motor housing, and the rear member 39 of the bracket carries the handle 9 which is preferably made in the form of a standard hand-saw handle.
  • the handle may be equipped with a trigger 4
  • Suitable electrical connections have been indicated at 43 and 44, but need no description since they are of conventional character.
  • the operator suitably adjust the foot 6 and the gauge 1, which latter adjustment also places the front end of the conduit 8 into the proper position.
  • the operator then lifts the device, gripping the handle with his right hand and the fan housing with his left hand, introduces the foot 6 underneath the plaster cast, pulls the trigger 4
  • the saw will now out through the plaster and the fabric of the cast, such as cloth, cotton or woolen padding, without any danger of injuring the skin of the patient.
  • the dust will be sucked into the conduit due to the action of the fan and will be discharged into the bag 34.
  • a power saw for cutting plaster casts comprising a motor having a shaft projecting therefrom, a rotary saw on said shaft being spaced from the motor, a fixed member secured upon the motor and extending to within close proximity of the saw, and a gauge carried by the end of the fixed member adjacent the saw to limit the cutting depth of the latter, the gauge comprising a frame slidable in the fixed member and having a shoe adapted to ride on the surface of the cast to be out, and threaded means for vertically adjusting the frame with respect to the fixed member.
  • a power saw for cutting plaster casts comprising a motor having a shaft projecting therefrom, a rotary saw mounted for operation by the shaft, 2. fixed member secured upon the motor and extending to within close proximity of the saw, a, gauge carried by the fixed member for limiting the depth of the cut, and a discharge tube for catching the saw dust, the discharge tube having one end supported by the gauge.
  • a power saw for cutting plaster casts comprising a motor having a shaft projecting therefrom, a rotary saw mounted for operation by the shaft, a fixed member secured upon the motor and extending to within close proximity of the saw, a gauge, adjustable means on the fixed member for supporting the gauge, and a discharge tube for catching the saw dust, the discharge tube having one end supported by the gauge so as to be adjustable therewith.
  • a power saw for cutting plaster casts comprising a, motor having a shaft projecting therefrom in opposite directions, a rotary saw on one end of the shaft, a fan on the other end of the shaft having a housing surrounding the same, a depth gauge for the saw, means for adiustably supporting the same, and a discharge conduit arranged alongside the housing, the discharge conduit having one end supported by the depth gauge in operative proximity to the saw for catching the saw dust so as to be adjustable with the gauge, and having its other end connected to the fan housing.
  • a motor having a shaft projecting therefrom, a rotary saw mounted for operation by the shaft, an adjustable depth gauge for the saw, and a discharge conduit for the saw dust having its receiving end supported by the depth gauge so as to be adjustable therewith.
  • a power saw for cutting plaster casts comprising a motor having a shaft projecting therefrom, a rotary saw mounted for operation by the shaft, a fixed member secured upon the motor and extending to within close proximity of the saw, and a gauge carried by the fixed member adjacent the saw to limit the cutting depth of the latter, the gauge comprising a frame slidable in the fixed member and having a shoe adapted to ride on the surface of the cast to be cut, and means for vertically adjusting the frame with respect to the fixed member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Forests & Forestry (AREA)
  • Wood Science & Technology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Sawing (AREA)

Description

May 7, 1946. F. HOOD ETAL POWER SAW FOR CUTTING PLASTER CASTS Filed June 19, 1944 II ll J F an:
INVENTORS FRANK E. H000.
HOOD.
BY E i M Afro/wk).
Patented May 7, 1946 POWER SAW FOR CUTTING PLAsTEa oAs'rs Frank E. Hood and James Edgar Hood,
, LongBeach, Calii'.
Application June19, 1944, Serial No. 541,024 6 Claims. (01. 3o 124) The present invention relates to improvements in power saws for cutting plaster casts, and its principal object is to provide. a. saw of the char.- acter described whereby a cast applied to a patient may be cut speedily for removal without. any danger of. injuring the skin of. the patient.
A further object of the invention is to provide,
in combination with a saw of the character described, a protecting foot adapted to ride between the skin, of the patient and the cast so as to prevent the saw from coming, in contact with the skin of the patient.
It is further proposed to provide an adjustable depth gaugefor the saw whereby the saws cutting action may be limited exactly to the thickness of the cast to be out.
It; is further proposed to provide means for carrying oil the saw dust and to arrange the same in front of the saw immediately above th cast,
and to make the same adjustable With the depth gauge.
And finally, we propose to provide a saw of the character described that is well balanced, easy to operate, quickly adjusted, and economic to manufacture.
Further objects and advantages of our invention will appear as the specification proceeds, and the novel features of our saw will be fully delined in the claims hereto appended.
The preferred form of our invention is illustrated in the accompanying drawing, in which:
Figure 1 shows a top plan view of our power saw;
Figure 2, an end view of the same; and
Figure 3, a fragmentary plan view of the end portion of the power saw with certain parts re-- moved.
While we have shown only the preferred form of our invention, we wish to have it understood that various changes or modifications may be made within the scope of the claims hereto attached without departing from the spirit of the invention.
Referring to the drawing in detail, our power saw I comprises, in its principal features, a motor 2, a motor shaft 3 having a rotary saw 4 at one end and a fan 5 at the other end, a foot 6 underneath the saw, a depth gauge 1 adjacent the say, a discharge conduit 8 for the dust, and a handle 9 whereby the whole device may be manipulated.
The motor housing has a tapered extension Ill coming to within close proximity of the saw and serving to furnish a bearing for the motor shaft near the saw. It also has a rectangular frame II projecting therefrom in the direction of the saw and above the axis thereof, the frame comprising .long'itudinallbars l2 and I3 and two crossmembers l4 and 15 disposed on opposite sides of the saw.
The. frame H supports. a hood it over the saw. It has a lateral extension ll, substantially in the plane of the saw, and this extension carries, with freedom of vertical adjustment, as by the screw and slot arrangement, shown at l 8, a leg I9, which is curved toward the saw so as to support the foot 5 underneath the saw.
The foot-t protects the skin of the patient for longitudinal cuts, but may be removed for vertical cuts into the plaster, when it is desired to out a. window into the cast. The adjustment takes care of saws of different sizes.
The front frame member M, which is widened in its central portion, as at 20, carries the depth gauge 'i made in the form of a rectangular frame 2| having two vertical columns 22 slidable in the member M, a top bar 23 and a bottom shoe 24 adaptable to ride on the plaster. The gauge may be adjusted by means of a screw 25 revolvably anchored in the frame member l4 and threaded into the top bar 23.
The discharge tube 8 for the saw dust is arranged alongside of the motor housing and has a front elbow 2B leaning toward the lower edge of the saw so as to receive the saw dust. It is formed with a cut-out 21 in the edge facing the saw to provide better access for the saw dust. The front elbow is supported by an extension 28 of the gauge shoe 24 so as to be adjustable therewith.
The rear end of the discharge conduit connects, through an elbow 30, to the central intake 3| of a housing 32 for the fan 5. The tangential outlet 33 has a suitable dust receiving bag 34 secured thereto.
The elbow 30 is revolvable in the intake 3|, as at 35 to allow of adjustment of the front end of the conduit by the raising and lowering of the gauge shoe 24, and the conduit 8 is extensible, as at 36, to allow of slight changes in the length of the conduit incident to the adjustment.
The frame I I has a bracket 38 rising therefrom between the saw and the motor housing, and the rear member 39 of the bracket carries the handle 9 which is preferably made in the form of a standard hand-saw handle. The handle may be equipped with a trigger 4| for opening and closing the motor circuit and with a locking pin 42 for locking the trigger in circuit-closing position.
Suitable electrical connections have been indicated at 43 and 44, but need no description since they are of conventional character.
In use, the operator suitably adjust the foot 6 and the gauge 1, which latter adjustment also places the front end of the conduit 8 into the proper position. The operator then lifts the device, gripping the handle with his right hand and the fan housing with his left hand, introduces the foot 6 underneath the plaster cast, pulls the trigger 4| for starting the motor and presses forward.
The saw will now out through the plaster and the fabric of the cast, such as cloth, cotton or woolen padding, without any danger of injuring the skin of the patient.
The dust will be sucked into the conduit due to the action of the fan and will be discharged into the bag 34.
We claim:
1. A power saw for cutting plaster casts comprising a motor having a shaft projecting therefrom, a rotary saw on said shaft being spaced from the motor, a fixed member secured upon the motor and extending to within close proximity of the saw, and a gauge carried by the end of the fixed member adjacent the saw to limit the cutting depth of the latter, the gauge comprising a frame slidable in the fixed member and having a shoe adapted to ride on the surface of the cast to be out, and threaded means for vertically adjusting the frame with respect to the fixed member.
2. A power saw for cutting plaster casts comprising a motor having a shaft projecting therefrom, a rotary saw mounted for operation by the shaft, 2. fixed member secured upon the motor and extending to within close proximity of the saw, a, gauge carried by the fixed member for limiting the depth of the cut, and a discharge tube for catching the saw dust, the discharge tube having one end supported by the gauge.
3. A power saw for cutting plaster casts comprising a motor having a shaft projecting therefrom, a rotary saw mounted for operation by the shaft, a fixed member secured upon the motor and extending to within close proximity of the saw, a gauge, adjustable means on the fixed member for supporting the gauge, and a discharge tube for catching the saw dust, the discharge tube having one end supported by the gauge so as to be adjustable therewith.
4. A power saw for cutting plaster casts comprising a, motor having a shaft projecting therefrom in opposite directions, a rotary saw on one end of the shaft, a fan on the other end of the shaft having a housing surrounding the same, a depth gauge for the saw, means for adiustably supporting the same, and a discharge conduit arranged alongside the housing, the discharge conduit having one end supported by the depth gauge in operative proximity to the saw for catching the saw dust so as to be adjustable with the gauge, and having its other end connected to the fan housing.
5. In a power saw for cutting plaster casts, a motor having a shaft projecting therefrom, a rotary saw mounted for operation by the shaft, an adjustable depth gauge for the saw, and a discharge conduit for the saw dust having its receiving end supported by the depth gauge so as to be adjustable therewith.
6. A power saw for cutting plaster casts comprising a motor having a shaft projecting therefrom, a rotary saw mounted for operation by the shaft, a fixed member secured upon the motor and extending to within close proximity of the saw, and a gauge carried by the fixed member adjacent the saw to limit the cutting depth of the latter, the gauge comprising a frame slidable in the fixed member and having a shoe adapted to ride on the surface of the cast to be cut, and means for vertically adjusting the frame with respect to the fixed member.
FRANK E. HOOD.
JAMES EDGAR HOOD.
US541024A 1944-06-19 1944-06-19 Power saw for cutting plaster casts Expired - Lifetime US2399677A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US541024A US2399677A (en) 1944-06-19 1944-06-19 Power saw for cutting plaster casts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US541024A US2399677A (en) 1944-06-19 1944-06-19 Power saw for cutting plaster casts

Publications (1)

Publication Number Publication Date
US2399677A true US2399677A (en) 1946-05-07

Family

ID=24157888

Family Applications (1)

Application Number Title Priority Date Filing Date
US541024A Expired - Lifetime US2399677A (en) 1944-06-19 1944-06-19 Power saw for cutting plaster casts

Country Status (1)

Country Link
US (1) US2399677A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3332148A (en) * 1965-10-22 1967-07-25 Armstrong Cork Co Cutter
US3353266A (en) * 1966-01-19 1967-11-21 Goolsby Bertha Attachment for a cast cutter
US20100024223A1 (en) * 2008-07-29 2010-02-04 Jonathan Lehman Cast saw
US20100058911A1 (en) * 2008-09-11 2010-03-11 Jay Aaron Goddard Blade Guard for Power Tool Having an Evacuation System
US20100112918A1 (en) * 2008-11-05 2010-05-06 Lee Brian Vosika Jewelry bench dust shield

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3332148A (en) * 1965-10-22 1967-07-25 Armstrong Cork Co Cutter
US3353266A (en) * 1966-01-19 1967-11-21 Goolsby Bertha Attachment for a cast cutter
US20100024223A1 (en) * 2008-07-29 2010-02-04 Jonathan Lehman Cast saw
US20100058911A1 (en) * 2008-09-11 2010-03-11 Jay Aaron Goddard Blade Guard for Power Tool Having an Evacuation System
US20100112918A1 (en) * 2008-11-05 2010-05-06 Lee Brian Vosika Jewelry bench dust shield
US8539940B2 (en) * 2008-11-05 2013-09-24 Lee Brian Vosika Jewelry bench dust shield

Similar Documents

Publication Publication Date Title
US2529210A (en) Cutting apparatus for wallboards and the like
US4885965A (en) Rotary saw for sectioning dental models
US2399677A (en) Power saw for cutting plaster casts
US2522006A (en) Power-driven cast cutter
IT1229750B (en) DEVICE AND PROCEDURE FOR MEASURING THE FORM AND DIMENSIONS OF A WORKING PIECE IN A SAWING MACHINE, AS WELL AS A DEVICE TO AUTOMATICALLY ADJUST THE GUIDE OF THE CUTTING BLADE IN POSITION TO ADAPT IT TO THE FORM AND DIMENSIONS OF THE WORKING PIECE.
US3353266A (en) Attachment for a cast cutter
US2538456A (en) Protective guard attachment for band saws
US2352432A (en) Surgical cast cutter
US1552665A (en) Chip box
US2330952A (en) Plaster cast cutting device
US1530023A (en) Plaster-cast saw
US3358332A (en) Press for molding plastic
US2120897A (en) Saw
US1670946A (en) Safety guard
US1505947A (en) Block-surfacing machine
US2698997A (en) Cast cutter
CN109109062A (en) A kind of plastic pipe cutting device
US2096666A (en) Saw guard
SU552998A1 (en) M chopping
CN219726823U (en) Semiconductor chip slitting device
CN218855909U (en) Glass processing cutting device
US1362545A (en) Positive guard for circular table-saws
US1700206A (en) Jointer guard
CN212170903U (en) Gantry numerical control line stone cutting machine for high-precision machining
CN209793265U (en) Environment-friendly building steel cutting machine