US96008A - Improvement in saw-gttmmer - Google Patents
Improvement in saw-gttmmer Download PDFInfo
- Publication number
- US96008A US96008A US96008DA US96008A US 96008 A US96008 A US 96008A US 96008D A US96008D A US 96008DA US 96008 A US96008 A US 96008A
- Authority
- US
- United States
- Prior art keywords
- saw
- improvement
- chain
- gttmmer
- dog
- 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
- 241000282472 Canis lupus familiaris Species 0.000 description 14
- 241000763859 Dyckia brevifolia Species 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- FSVJFNAIGNNGKK-UHFFFAOYSA-N Praziquantel Chemical compound C1C(C2=CC=CC=C2CC2)N2C(=O)CN1C(=O)C1CCCCC1 FSVJFNAIGNNGKK-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000010978 jasper Substances 0.000 description 2
- 230000036633 rest Effects 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
- B23D63/00—Dressing the tools of sawing machines or sawing devices for use in cutting any kind of material, e.g. in the manufacture of sawing tools
- B23D63/001—Devices for positioning the dressing tool with respect to the saw blade
Definitions
- my invention consists in adding certain devices as an improvement on what is commonly known as the Emerson gummer, and those of similar make, so as to securely hold the saw, and prevent all movement while it is being gummed.
- Figure l isa side elevation of my invention.
- Figures?. and 3 are 'views of the dogs attached to the chain, so as to assist in holding the saw.
- Letter A represents one of Emersous ordinary guml mers, to which a saw-blade is attached.
- the saw-blade is held only by two set-screws B, there is a constantrocking motion of the saw, which greatly interferes with t4 e operation, and requires an amount of force to be expended onthe screw that the gumlner either becomes greatly strained or is broken 'iu ⁇ t ⁇ vo.
- I employ two devices.
- these plates or bars will be cast on the main block, and may extend either up above or down below only, as may be desired.
- the one, G consists of a mfetal block, grooved upon both its top and bottom, and has a loop upon both ends, so as to hold it on the chain.
- the groove uponits bottom enables it to. take abetter hold of the saw, while the one on top serves as 'a bed, in which the chain rests.
- Th'e other dog H is formed like a hinge, and when the chain is pressed over it, it closes, so as to grasp it tightly and firmly.
- the dog G consisting of a grooved metal block, provided with loops, substantially as specified.
- the dog H when formed like a' hinge, with its rough and sharp projections, so as to prevent the saw from slipping, substantially as described.
Description
.stent @Mira A identit gisten Letters Patent No. 96,008, dated October 19,1869,
IMPROVEMENT IN SAW-GUMMER.
c l The Schedule referred to in these Letters Patent and making part of the same,
Po all who-m -it may concern:
Be it known that 'I, NELSON Jonsson, of Jasper,-
in the county of Steuben, and in the State of New York, have invented certain new and useful Improvements in Saw-Gumming Machines; and I do hereby declare that the following is afull, clear, and exact description thereof, reference being had to the accompanying drawings, and to the` letters of reference marked thereon, making a.part of this specification. v
The nature of my invention consists in adding certain devices as an improvement on what is commonly known as the Emerson gummer, and those of similar make, so as to securely hold the saw, and prevent all movement while it is being gummed.
Figure l isa side elevation of my invention. Figures?. and 3 are 'views of the dogs attached to the chain, so as to assist in holding the saw.
Letter A represents one of Emersous ordinary guml mers, to which a saw-blade is attached. As in the ordinary gummers, the saw-blade is held only by two set-screws B, there is a constantrocking motion of the saw, which greatly interferes with t4 e operation, and requires an amount of force to be expended onthe screw that the gumlner either becomes greatly strained or is broken 'iu\t\vo. In order to relieve the screw of this great pressure, I employ two devices.
Upon the two set-screws B, I slip two elongated metal plates'C, one on each side of the saw.
At each end of these plates or bars there is a smaller set-screw, D, which is brought to bear against the sides of the'saw, thus having it held in three places instead of one, and prevents any rocking or other motion. f
In casting the gunnners, these plates or bars will be cast on the main block, and may extend either up above or down below only, as may be desired.
' In order torelieve the 'set-screws as much as possible, upon two hooks or projections cast on the gummer, I attach the chain E, which passes over the saw, and assists in not only steadying the saw, but in pressf ing it up against the cutter. This chain canbe of any length, and can be shortened or lengthened, so as to adapt it to both large and small` saws, by changing the links on the hooks. l
As the chain by itself` would scarcely be sufficient to 'grasp the saw securely enough, I propose to employ two kind of dogs. l
The one, G, consists of a mfetal block, grooved upon both its top and bottom, and has a loop upon both ends, so as to hold it on the chain. The groove uponits bottom enables it to. take abetter hold of the saw, while the one on top serves as 'a bed, in which the chain rests.
Th'e other dog H is formed like a hinge, and when the chain is pressed over it, it closes, so as to grasp it tightly and firmly. Upon the inner edges of the sides' of this dog there are two rough file-like projections, and upon the ends of the rod,`which binds the two parts together, there are sharp chisel-like edges, which prevent the saw from sliding or slipping.
Having thus described my invention,
What I claim, and desire to secure by Letters Pat ent, is-
l. The chain E, when used'wth the dogs, for the purpose of holding the 'saw against the cut-ter, substantially as set forth and described.
2. The dog G, consisting of a grooved metal block, provided with loops, substantially as specified.
3. The dog H, when formed like a' hinge, with its rough and sharp projections, so as to prevent the saw from slipping, substantially as described.
4. The arrangement, upon the inner upper ends oi' the slotted frame A, of the two flat plates O O, placed at right angles with the frame, and providedwith the central screw B and end screws D D, substantially as shown and described.
In testimony that I claimv the foregoing, I have hereunto set my hand, this 17th day of April, 1869.
NELSON JOHNSON.
XVitnesses:
J. M. SIMPSON, L. CRAIG.
Publications (1)
Publication Number | Publication Date |
---|---|
US96008A true US96008A (en) | 1869-10-19 |
Family
ID=2165475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US96008D Expired - Lifetime US96008A (en) | Improvement in saw-gttmmer |
Country Status (1)
Country | Link |
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US (1) | US96008A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020189388A1 (en) * | 2001-06-18 | 2002-12-19 | Michinobu Suzuki | Gear change device |
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0
- US US96008D patent/US96008A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020189388A1 (en) * | 2001-06-18 | 2002-12-19 | Michinobu Suzuki | Gear change device |
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