US590A - Saw foe - Google Patents
Saw foe Download PDFInfo
- Publication number
- US590A US590A US590DA US590A US 590 A US590 A US 590A US 590D A US590D A US 590DA US 590 A US590 A US 590A
- Authority
- US
- United States
- Prior art keywords
- saw
- tooth
- foe
- ice
- edge
- 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
Links
- 238000010276 construction Methods 0.000 description 2
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
- 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
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/929—Tool or tool with support
- Y10T83/9319—Toothed blade or tooth therefor
- Y10T83/9367—Teeth having cutting edge perpendicular to blade surface
Definitions
- each tooth should be cut at an angle somewhat greater than the front and each tooth is to be at the extreme point of the front edge about one eighth of an 'inch longer than the extreme point of the rear edge thereofv measuring in a perpendicular line from the back of the plate; each tooth is to be about three inches in length and from the termination of the back edge to 'the termination of the front edge is to be about three quarters of'an inch in width.
- the object in making the front edge of each tooth longer than the rear edge is to enable theA front edge of each tooth to act as a chissel in cutting into the ice while the rear part serves as a shoulder to prevent the tooth next succeeding from sinking into the ice to a greater depth than the difference between the length of the two edges at each forward motion of the saw.
- a greater cut may be obtained and vice versa.
- At the end of the saw is an imperfect tooth (4) having the rear edge like the rear edges of the other teeth to serve as a shoulder to the neXt succeeding tooth, but without pos-Y Sessing a cutting edge like the other teeth.
- the line fro-m the frontedge of said tooth to the back of the saw being a perpendicular line.
- the front edge of each tooth is to beV saw is worked by hand in the usual manner.V
Description
NITED sTATEs :PATENT oEEroE.
JOHN BAEKER, 0E CAMBRIDGE, MASSACHUSETTS.
SAW Eon. SAW'ING ICE.
Specification of Letters Patent No.` 590, dated February 3, 1838i.
'o all whom t may concern:
Be it known that I, JOHN BAKKER, of Cambridge, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Saws Commonly Used Heretofore for Sawing Ice; and I do hereby declare that the following is a full and exact description.
The nature of my improvement consists in the peculiar form in which the teeth of this ice saw are cut by means of which the saw is driven forward with more ease and accomplishes more work 4with less power than any saw heretofore used for cutting ice.
To enable others skilled in the art to make and use my improvement aforesaid l will proceed to describe its construction and operation. First. The handle and plate (1st of accompanying drawings) of this saw may be of the kind in common use. Second. Each tooth should be so cut as to give on the front edge of it (2nd of accompanying drawings) an angle of about forty five degrees with the back of the plate the inclination being from the point toward the handle. The rear of each tooth (3rd of accompanying drawings) should be cut at an angle somewhat greater than the front and each tooth is to be at the extreme point of the front edge about one eighth of an 'inch longer than the extreme point of the rear edge thereofv measuring in a perpendicular line from the back of the plate; each tooth is to be about three inches in length and from the termination of the back edge to 'the termination of the front edge is to be about three quarters of'an inch in width. The object in making the front edge of each tooth longer than the rear edge is to enable theA front edge of each tooth to act as a chissel in cutting into the ice while the rear part serves as a shoulder to prevent the tooth next succeeding from sinking into the ice to a greater depth than the difference between the length of the two edges at each forward motion of the saw. By increasing the dierence between the length of the front and rear edges of each tooth a greater cut may be obtained and vice versa. Third. At the end of the saw is an imperfect tooth (4) having the rear edge like the rear edges of the other teeth to serve as a shoulder to the neXt succeeding tooth, but without pos-Y Sessing a cutting edge like the other teeth. The line fro-m the frontedge of said tooth to the back of the saw being a perpendicular line. The front edge of each tooth is to beV saw is worked by hand in the usual manner.V
. JOHN BARKER. VitneSseS:
JAMES W. FENNO, ELrsHA BURBANK,
Publications (1)
Publication Number | Publication Date |
---|---|
US590A true US590A (en) | 1838-02-03 |
Family
ID=2060872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US590D Expired - Lifetime US590A (en) | Saw foe |
Country Status (1)
Country | Link |
---|---|
US (1) | US590A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040104728A1 (en) * | 1996-07-29 | 2004-06-03 | Bertness Kevin I. | Alternator tester with encoded output |
US20050075807A1 (en) * | 1997-11-03 | 2005-04-07 | Bertness Kevin I. | Electronic battery tester with network communication |
US20060006876A1 (en) * | 2004-07-12 | 2006-01-12 | Midtronics, Inc. | Wireless battery tester/charger |
US20110266448A1 (en) * | 2010-03-17 | 2011-11-03 | Burgett Eric Anthony | THIN FILM DOPED ZnO NEUTRON DETECTORS |
US20130075718A1 (en) * | 2010-03-17 | 2013-03-28 | Jeff E. NAUSE | THIN FILM DOPED ZnO NEUTRON DETECTOR |
WO2019099615A1 (en) | 2017-11-17 | 2019-05-23 | The United States Of America, As Represented By The Secretary, Department Of Health And Human Services | Use of copeptin to modulate the immune response and hematopoiesis, and stimulate bone growth |
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0
- US US590D patent/US590A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040104728A1 (en) * | 1996-07-29 | 2004-06-03 | Bertness Kevin I. | Alternator tester with encoded output |
US20050075807A1 (en) * | 1997-11-03 | 2005-04-07 | Bertness Kevin I. | Electronic battery tester with network communication |
US20060006876A1 (en) * | 2004-07-12 | 2006-01-12 | Midtronics, Inc. | Wireless battery tester/charger |
US20110266448A1 (en) * | 2010-03-17 | 2011-11-03 | Burgett Eric Anthony | THIN FILM DOPED ZnO NEUTRON DETECTORS |
US20130075718A1 (en) * | 2010-03-17 | 2013-03-28 | Jeff E. NAUSE | THIN FILM DOPED ZnO NEUTRON DETECTOR |
WO2019099615A1 (en) | 2017-11-17 | 2019-05-23 | The United States Of America, As Represented By The Secretary, Department Of Health And Human Services | Use of copeptin to modulate the immune response and hematopoiesis, and stimulate bone growth |
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