US7696A - Press for copying letters - Google Patents
Press for copying letters Download PDFInfo
- Publication number
- US7696A US7696A US7696DA US7696A US 7696 A US7696 A US 7696A US 7696D A US7696D A US 7696DA US 7696 A US7696 A US 7696A
- Authority
- US
- United States
- Prior art keywords
- press
- copying
- levers
- letters
- plates
- 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
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000036633 rest Effects 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/32—Presses specially adapted for particular purposes for consolidating scrap metal or for compacting used cars
- B30B9/321—Presses specially adapted for particular purposes for consolidating scrap metal or for compacting used cars for consolidating empty containers, e.g. cans
Definitions
- My press is of the pla-ten kind, the letter from which the copy is to be taken, and the book or paper which is to receive the impression being placed between two metallic plates, which are to be drawn together when the impression is to be taken; but I have so arranged and combined the pressing plates and the other parts of the apparatus as to render the press much more pleasant in its action than those generally used and much less-liable to the failure of its parts.
- A, A is the upper plate or table of the press, and B B the lower plate between which the copying is to be effected.
- the lower plate rests on a strong steel spring C C, a top and edge view of which are shown in Fig. 3.
- the plate B is curved on its under side and the spring C, may also be curved to any desired extent, so that its elastic action shall continue during the whole time of taking the impression.
- E, E are two levers which when the press is out of use stand in the position represented in Fig. l, in which position the plates are also ready to receive the letter and copying paper between them. By drawing these levers E, E, apart the plates A, and B, will be made to approach each other, and a copy may be taken.
- D, D are bolts which pass through the plate A, and the ends of the steel springs C, C, where they are furnished with adjusting nuts P, P.
- levers E, E work, on joint pins a, the circular ends of these levers being received within brackets F, F, on the upper side of the plate A.
- brackets F, F on the upper side of the plate A.
- these levers operate in the same way with the single lever now in common use in the platen copying press, but those used by me work with a degree of ease and smoothness of which said press is not susceptible and furnish a perfect impression with apparently much less force, arising from the elasticity of the spring, and the more ad vantageous manner in which the power is applied to the levers.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Press Drives And Press Lines (AREA)
Description
UNITED STATES PATENT GFFICE.
GEO. BURNHAM, OF PHILADELPHIA, PENNSYLVANIA..
PRESS FOR COPYING LETTERS.
Specification of Letters Patent No. 7,696, dated October 8, 1850.
To all whom it may concern Be it known that I, GEORGE BURNHAM, of the city of Philadelphia, in the State of Pennsylvania, have made certain new and useful Improvements in the Manner of Constructing a Press fo-r the Copying of Letters; and I do hereby declare that the following is a full and eXact description thereof.
My press is of the pla-ten kind, the letter from which the copy is to be taken, and the book or paper which is to receive the impression being placed between two metallic plates, which are to be drawn together when the impression is to be taken; but I have so arranged and combined the pressing plates and the other parts of the apparatus as to render the press much more pleasant in its action than those generally used and much less-liable to the failure of its parts.
In t-he accompanying drawing Figure l, is a vertical section of the press from end to 'end near its middle and Fig. 2, an end view thereof.
A, A, is the upper plate or table of the press, and B B the lower plate between which the copying is to be effected. The lower plate rests on a strong steel spring C C, a top and edge view of which are shown in Fig. 3. The plate B, is curved on its under side and the spring C, may also be curved to any desired extent, so that its elastic action shall continue during the whole time of taking the impression. E, E, are two levers which when the press is out of use stand in the position represented in Fig. l, in which position the plates are also ready to receive the letter and copying paper between them. By drawing these levers E, E, apart the plates A, and B, will be made to approach each other, and a copy may be taken. D, D, are bolts which pass through the plate A, and the ends of the steel springs C, C, where they are furnished with adjusting nuts P, P.
The levers E, E, work, on joint pins a, the circular ends of these levers being received within brackets F, F, on the upper side of the plate A. In their eccentric action these levers operate in the same way with the single lever now in common use in the platen copying press, but those used by me work with a degree of ease and smoothness of which said press is not susceptible and furnish a perfect impression with apparently much less force, arising from the elasticity of the spring, and the more ad vantageous manner in which the power is applied to the levers.
Having thus fully described the nature of my improvement in the manner of con structing my platen press for the copying of letters, what I claim therein as new, and desire to secure by Letters Patent is,`
The manner in which I have arranged. and combined the two plates, or platens A, and B, with the two levers E, E, and with the steel springs C, C as set forth; the two plates being made to approach each other by the drawing apart of the levers E, E. The two bolts D, D, that are operated on by said levers, passing through the outer ends of the spring C, which is curved, and operates on the curved bottom of the plate B, in the manner and for the purpose set forth.
GEO. BURNHAM.
Vitnesses:
J. WV. McMAHoN, WV. R. SMITH.
Publications (1)
Publication Number | Publication Date |
---|---|
US7696A true US7696A (en) | 1850-10-08 |
Family
ID=2068006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US7696D Expired - Lifetime US7696A (en) | Press for copying letters |
Country Status (1)
Country | Link |
---|---|
US (1) | US7696A (en) |
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0
- US US7696D patent/US7696A/en not_active Expired - Lifetime
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