US91979A - Improved extension-trestle - Google Patents
Improved extension-trestle Download PDFInfo
- Publication number
- US91979A US91979A US91979DA US91979A US 91979 A US91979 A US 91979A US 91979D A US91979D A US 91979DA US 91979 A US91979 A US 91979A
- Authority
- US
- United States
- Prior art keywords
- legs
- trestle
- improved extension
- beams
- cross
- 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
- 239000002965 rope Substances 0.000 description 10
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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
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/28—Scaffolds primarily resting on the ground designed to provide support only at a low height
- E04G1/32—Other free-standing supports, e.g. using trestles
Definitions
- Figure 2 is a section in line x x, fig. 1.
- my invention consists in providing the upper end of the stationary standards, or legs of the trestle, with a sheave, over which a rope passes, this rope being attached to the 'foot of the sliding legs, and operating in a groove in the inner face of the same. Also, in the manner of attaching Vthe legs, or 'standards to the cross-beams, and of steadying the whole apparatus.
- a A' in the drawings, may represent the lower or stationary legs of the trestle, provided at 'their top. with hands, ay a', which grasp the movable, or sllding legs B B', and being grasped themselves by hands, b b', attached to the lower ends of the Iegs B B'.
- O C' are the cross-beams, being provided, at opposite ends, with hands, c'c', grasping each other's free ends.
- These cross-beams are connected, O to the legs B, and O' to the legs B', by means of screw-bolts d d', two'bolts on each end passing through the legs and cross-beams in opposite directions, being secuned by thumb-nuts, e e', so that by unscrewing the-latter, the trestle can be quickly taken to pices, packed into a small compass,itransported to any desired place, and then erected in a very few moments.
- legs A A" On the inner faces of the legs A A" are provided lngs, or ears 'i 73', between which flat bars, k k', are pivoted, said' bars having pins, l l', at theirends, and being provided with holes m m', in such a manner that when the bars are placed parallel to each other, the pin ot' each bar will seize 'in a correspondlng hole in the contig'uons bar, and thns hold and steady the trestle at whatever distance the lower legs A A' may be apart.
Description
nam: emo;
-OTTO SLlIK ER, OF LINCO'LNyILLLINOIS.
Letters ,Patent No. 91,979, dated .Time- 29, 1869.
IMPROVED EXTENSION-TRESTLE.
The Scheule refen'ed to in these Letters Patent :md making part of the same.
To all u'liom 'it 'ma-y cmlce'rn:
Be it known that I, OTTO SLIKER, of Lincoln, in the county of Logan, and State of Illinois, have invented a new and useful lmprovement in Extensioni Trestles and I do hereby (leclare the following to be a full and correct description of the sa-me, snfficient to enable othersskilled in the art to which my invention relates, to fully understand and use the same, reference being had to the accompanying drawings, which make part of this specification, and in which-'- Figure 1 is a perspective view, and
Figure 2, is a section in line x x, fig. 1.
Like letters of reference indicate like parts in both fignres.
rllhe nature of my invention consists in providing the upper end of the stationary standards, or legs of the trestle, with a sheave, over which a rope passes, this rope being attached to the 'foot of the sliding legs, and operating in a groove in the inner face of the same. Also, in the manner of attaching Vthe legs, or 'standards to the cross-beams, and of steadying the whole apparatus. p
A A', in the drawings, may represent the lower or stationary legs of the trestle, provided at 'their top. with hands, ay a', which grasp the movable, or sllding legs B B', and being grasped themselves by hands, b b', attached to the lower ends of the Iegs B B'.
O C' are the cross-beams, being provided, at opposite ends, with hands, c'c', grasping each other's free ends. These cross-beams are connected, O to the legs B, and O' to the legs B', by means of screw-bolts d d', two'bolts on each end passing through the legs and cross-beams in opposite directions, being secuned by thumb-nuts, e e', so that by unscrewing the-latter, the trestle can be quickly taken to pices, packed into a small compass,itransported to any desired place, and then erected in a very few moments.`
, In the top of the legs A A', I provide sheaves, f f', over which ropes, g g', pass inwardly, down' a groove, h, in the legs B B', and through the lower end of the latter legs, to which they may be secured by a knot, as shown in the drawings, or in any other suitable manner-V By pulling these ropes g g', the'legs B B' are elevated, as will be easily understood. i
On the inner faces of the legs A A" are provided lngs, or ears 'i 73', between which flat bars, k k', are pivoted, said' bars having pins, l l', at theirends, and being provided with holes m m', in such a manner that when the bars are placed parallel to each other, the pin ot' each bar will seize 'in a correspondlng hole in the contig'uons bar, and thns hold and steady the trestle at whatever distance the lower legs A A' may be apart.
Having thus described my invention,
hat I c'laim as new, and desire to secure by Letters Patent, is-
The combination and arrangement, in an extensiontrestle, of sliding legs A A', B B', sliding cross-beams O 0', screw-bolts d d', thumb-nuts c e', bands'a a', b b', c c', sheaves f', ropes g g', slots h, ears 'i 11', bars k k', pins l l', and holes m 'm', all arlanged and Operating as described and shown.
OTTO SLIKER. Witncsses:
JosEPH Oovme'ron, Crms. H. MILLER.
Publications (1)
Publication Number | Publication Date |
---|---|
US91979A true US91979A (en) | 1869-06-29 |
Family
ID=2161457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US91979D Expired - Lifetime US91979A (en) | Improved extension-trestle |
Country Status (1)
Country | Link |
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US (1) | US91979A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2706661A (en) * | 1949-08-20 | 1955-04-19 | Michael Covillo | Collapsible support |
US2729516A (en) * | 1952-02-13 | 1956-01-03 | Colvin Harry | Adjustable scaffold |
US20050038633A1 (en) * | 2003-08-11 | 2005-02-17 | Elias Gedamu | System and method for analysis of cache array test data |
-
0
- US US91979D patent/US91979A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2706661A (en) * | 1949-08-20 | 1955-04-19 | Michael Covillo | Collapsible support |
US2729516A (en) * | 1952-02-13 | 1956-01-03 | Colvin Harry | Adjustable scaffold |
US20050038633A1 (en) * | 2003-08-11 | 2005-02-17 | Elias Gedamu | System and method for analysis of cache array test data |
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