US98559A - Improved scaffold-bracket - Google Patents
Improved scaffold-bracket Download PDFInfo
- Publication number
- US98559A US98559A US98559DA US98559A US 98559 A US98559 A US 98559A US 98559D A US98559D A US 98559DA US 98559 A US98559 A US 98559A
- Authority
- US
- United States
- Prior art keywords
- bracket
- jaws
- dog
- improved scaffold
- 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
- 210000001847 Jaw Anatomy 0.000 description 20
- 238000005266 casting Methods 0.000 description 4
- 210000000282 Nails Anatomy 0.000 description 2
- 210000002832 Shoulder Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 101700005195 prel Proteins 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
- E04G3/26—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons specially adapted for working on roofs
Definitions
- the spring is 4used to force the jaws apart, when the dog is turned down to release them, and to hold the cam-(login place.
- Figure 1 is a side elevation of myimproved clamp, showing the-application to'theroof, which is shown in dotted lines. Y
- ⁇ Figure 2 is an end View of the clamp.
- A is one of the jaws, and B, the other. They are designed to be made of metal, and shaped at the clamping-ends so as to take a iirmhold of a dat shingle.
- Tile one, A is provided with plates G, near the clamping-ends, for the support of the journals D of the eccentric or cam-dog E.
- the slot F is also formed in ,casting the jaw A, and the whole is thus constructed without yany expense for iitting, except in the application of' the spiral spring I, placed between the jawsand connected to one or both, as prel'erred.
- This spring serves the double purpose ofope against the end of the dog, so that the latter is always held in its bearings in the plates O, and prevented from falling out.
Description
waited gieten @anni @with Letters Patent No. 98,559, dated January 4, 1870.
IMPROVE!) SCAFFOLD-BRACKET.
The Schedule referred to in these Letters Patent and making part of the same.
To all whom .it may concern:
- support the scaffold-braces, without the driving of nails through the shingles.
It consists of a pairof clamp-jaws, an eccentric or cam-shaped,clamping-dog or lever, and a spring, so arrangedthat the jaws may be readily and securely attached to the end of a .shingle already nailed ou, by raising the end of the said shingle,inserting it between the jaws; and turning the clamp-dog lto force the jaws together.
The spring is 4used to force the jaws apart, when the dog is turned down to release them, and to hold the cam-(login place.
Figure 1 is a side elevation of myimproved clamp, showing the-application to'theroof, which is shown in dotted lines. Y
` Figure 2 is an end View of the clamp.
Similar letters of reference indicate corresponding parts.
A is one of the jaws, and B, the other. They are designed to be made of metal, and shaped at the clamping-ends so as to take a iirmhold of a dat shingle.
Tile one, A, is provided with plates G, near the clamping-ends, for the support of the journals D of the eccentric or cam-dog E.
At the other end it is bent up at a. right angle abd slotted at F, for the reception of the end of the jaw B, which is provided with shoulders, at G, to bear against the edges of the plates G, for holding the said end in the slot. The plates C are provided with .curved slots H, leading from one edge to the holes, for the bearings of the journals D of the cam-dog, so that the latter may be put in its place readily, the jaw A and'plates O being formed together in one piece, by\ casting.
The slot F is also formed in ,casting the jaw A, and the whole is thus constructed without yany expense for iitting, except in the application of' the spiral spring I, placed between the jawsand connected to one or both, as prel'erred. This spring serves the double purpose ofope against the end of the dog, so that the latter is always held in its bearings in the plates O, and prevented from falling out.
The construction is, in this way, rendered exceed- Witnesses.` 4
L. E. WHITE, M. B.ALLEN.
ing the jaws and of holding the jaw B`
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US98559A true US98559A (en) | 1870-01-04 |
Family
ID=2168019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US98559D Expired - Lifetime US98559A (en) | Improved scaffold-bracket |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US98559A (en) |
-
0
- US US98559D patent/US98559A/en not_active Expired - Lifetime
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