US75423A - George hoover - Google Patents
George hoover Download PDFInfo
- Publication number
- US75423A US75423A US75423DA US75423A US 75423 A US75423 A US 75423A US 75423D A US75423D A US 75423DA US 75423 A US75423 A US 75423A
- Authority
- US
- United States
- Prior art keywords
- hoover
- george
- board
- draught
- tram
- 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
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- 235000013382 Morus laevigata Nutrition 0.000 description 2
- 244000278455 Morus laevigata Species 0.000 description 2
- 230000023298 conjugation with cellular fusion Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000021037 unidirectional conjugation Effects 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H7/00—Marking-out or setting-out work
Definitions
- My invention relates to an instrument for obtaining theface-monld of stair-rails of all kinds, either circular or elliptical.
- the instrument is also very convenient for producing angle-brackets.
- .A represents the draught-board.
- D is the pitch-board.
- B represents a plank on its proper elevation ready to receive the lines for the face-mould.
- E represents the adjustable arm of the tram, and F is a cylinder-arm of said tram, sliding and turning freely on the horizontal red I, which latter is supported on the adjustable vertical rods G and H, by being secured in the collars K and K with thumb-screw b.
- the rods G and H are connected with draught-board A by means of clutches J and J, in which latter they are secured by thumbscrews,.and may be adjusted to suit any sized well-hole or opening between the rails.
- the clutches J and J are provided with lines, by which they may be secured to draught-board A, with their centres corresponding to the centre of said board.
- the pitch-board D is applied with the tread at right angles to the centre line a of the draught-board. By this means the proper pitch or elevation for the face mould is obtained.
- the plank for the rail is applied to the draught board according-to the aforesaid pitch or elevation, in which position it is held by one hand while the tram is applied with the other, as shown at C, thereby producing the necessary lines for the face-mould on one side.
- the rod I may then be removed'and reversed with the tram attached, or the tram only may be reversed and placed on the opposite end of red I, when the necessary lines are drawn on the reverse side of plank B, thus obtaining the face-mould on each side of said plank.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Warming Or Keeping Food Or Tableware Hot (AREA)
Description
GEORGE HOOVER, OE RICHMOND, INDIANA.
Letters Patent No. 75.423. dated March 10, 1868.
IMPROVED TRAMMEL FOB. STAIR-RAILS.
an 5x11211111: marsh in in time fitters time tut mating part at the sums.
TO ALL WHOM IT MAY CONCERN:
Be it known that I, GEORGE HOOVER, of the city of Richmond, and State of Indiana, have invented anew and useful Trammel for Stair-Rails, &c.; and I do hereby declare that the following is a full and. exact description of the same, reference being had to the accompanying drawing, making a part of this specification.
My invention relates to an instrument for obtaining theface-monld of stair-rails of all kinds, either circular or elliptical. The instrument is also very convenient for producing angle-brackets.
To enable others skilled in the art to make and use my invention. Iwill proceed to describe its construction and operation.
.A represents the draught-board. D is the pitch-board. B represents a plank on its proper elevation ready to receive the lines for the face-mould. E represents the adjustable arm of the tram, and F is a cylinder-arm of said tram, sliding and turning freely on the horizontal red I, which latter is supported on the adjustable vertical rods G and H, by being secured in the collars K and K with thumb-screw b. The rods G and H are connected with draught-board A by means of clutches J and J, in which latter they are secured by thumbscrews,.and may be adjusted to suit any sized well-hole or opening between the rails. The clutches J and J are provided with lines, by which they may be secured to draught-board A, with their centres corresponding to the centre of said board. The pitch-board D is applied with the tread at right angles to the centre line a of the draught-board. By this means the proper pitch or elevation for the face mould is obtained. The plank for the rail is applied to the draught board according-to the aforesaid pitch or elevation, in which position it is held by one hand while the tram is applied with the other, as shown at C, thereby producing the necessary lines for the face-mould on one side. The rod I may then be removed'and reversed with the tram attached, or the tram only may be reversed and placed on the opposite end of red I, when the necessary lines are drawn on the reverse side of plank B, thus obtaining the face-mould on each side of said plank.
Eaving thus fully described my said invention, what I claim, and desire tcsecure by Letters Patent, is-
1. I claim the herein-described tram, composed of the cylinder F and arm E, in combination with red I, substantially as described, and for the purpose set forth. 7 v
2. I claim the horizontal red I, vertical adjustable rods G and H, in combinationavith the collars K and K, clutches J and J, and draught-board A, substantially as set forth, and for the purpose specified.
GEORGE HOOVER.-
Witnesses:
JOSEPH RIDGE, HENRY RIcKs.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US75423A true US75423A (en) | 1868-03-10 |
Family
ID=2144930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US75423D Expired - Lifetime US75423A (en) | George hoover |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US75423A (en) |
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0
- US US75423D patent/US75423A/en not_active Expired - Lifetime
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