US157236A - Improvement in scaffold-clamps - Google Patents
Improvement in scaffold-clamps Download PDFInfo
- Publication number
- US157236A US157236A US157236DA US157236A US 157236 A US157236 A US 157236A US 157236D A US157236D A US 157236DA US 157236 A US157236 A US 157236A
- Authority
- US
- United States
- Prior art keywords
- scaffold
- clamps
- clamp
- improvement
- ledger
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
- F16G11/06—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with laterally-arranged screws
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- 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
- Y10T403/00—Joints and connections
- Y10T403/71—Rod side to plate or side
- Y10T403/7158—Diagonal connector
Definitions
- Figure 1 represents a front elevation of the scaffold.
- Fig. 2 is a vertical section of Fig. 1, taken on the line 00 x. v
- a A represent scaffoldpoles.
- B is the metallic clamp, which is fastened to the poles to hold what are known by builders as the ledgerboards 0, which support the outer ends of the put-logs (or short timbers) upon which the scaffoldin g or planks are placed, the inner ends of the put-logs being supported by the wall of the building.
- the ledger-boardsG are usually nailed to the scaffold-poles, and are split and destroyed when the scaffold is taken away.
- the clamp is made two feet (more or less) in length, from a bar of flat iron, bent edgewise at right angles, with ends turned and bent flatwise, as represented in dotted lines by D, each foot-piece having a hole, D, to receive a screw, E, which enters the pole, as seen in Fig.
- the feet D are turned in opposite directions, and the clamp is made to cross the pole diagonally, as seen, so that it may be more securely fastened to hold' the ledger-board, which rests upon its lower arm, as seen at F.
- the ledger-board is kept snug by means of fillet-pieces G, where they are not of sufficient thickness to fill the space between the pole and the clamp.
- Bolts instead of screws E, may be used, and the clamp may be made with the foot-piece D turned in one direction, and so that the clamp maybe attached to one side of the pole or vertically; but I prefer the arrangement shown.
- a scaffold-clamp bar, B having flat and per forated feet D D, adapted to be held to poles A by a pair of screws, as shown and described.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Catching Or Destruction (AREA)
Description
UNITED STATES PATENT OFFICE.
WILLIAM SMITH, OF PHILADELPHIA, PENNSYLVANIA.
IMPROVEMENT IN SCAFFOLD-CLAMPS.
Specification forming part of Letters Patent No- 157,236, dated November 24, 1874; application filed October 3, 1874. 4
To all whom it may concern Be it known that I, WILLIAM SMITH, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and Improved Scaffold-Clamps, of which the following is a specification:
The invention will first be fully described, and then pointed out in the claim.
Figure 1 represents a front elevation of the scaffold. Fig. 2 is a vertical section of Fig. 1, taken on the line 00 x. v
Similar letters of reference indicate corresponding parts.
A A represent scaffoldpoles. B is the metallic clamp, which is fastened to the poles to hold what are known by builders as the ledgerboards 0, which support the outer ends of the put-logs (or short timbers) upon which the scaffoldin g or planks are placed, the inner ends of the put-logs being supported by the wall of the building. The ledger-boardsG are usually nailed to the scaffold-poles, and are split and destroyed when the scaffold is taken away. The clamp is made two feet (more or less) in length, from a bar of flat iron, bent edgewise at right angles, with ends turned and bent flatwise, as represented in dotted lines by D, each foot-piece having a hole, D, to receive a screw, E, which enters the pole, as seen in Fig. 2. The feet D are turned in opposite directions, and the clamp is made to cross the pole diagonally, as seen, so that it may be more securely fastened to hold' the ledger-board, which rests upon its lower arm, as seen at F. The ledger-board is kept snug by means of fillet-pieces G, where they are not of sufficient thickness to fill the space between the pole and the clamp.
With this clamp the scaffold is made perfectly safe, and the ledger-boards are not injured. In fact, no nails are driven through them.
Bolts, instead of screws E, may be used, and the clamp may be made with the foot-piece D turned in one direction, and so that the clamp maybe attached to one side of the pole or vertically; but I prefer the arrangement shown.
I am aware that diagonal clamps having reversed end hooks are already known to the public; but
What I claim is A scaffold-clamp bar, B, having flat and per forated feet D D, adapted to be held to poles A by a pair of screws, as shown and described.
WILLIAM SMITH.
Witnesses:
N. QUIRING, BENJ. RIVERs.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US157236A true US157236A (en) | 1874-11-24 |
Family
ID=2226646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US157236D Expired - Lifetime US157236A (en) | Improvement in scaffold-clamps |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US157236A (en) |
-
0
- US US157236D patent/US157236A/en not_active Expired - Lifetime
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