US2714498A - Props or shores - Google Patents
Props or shores Download PDFInfo
- Publication number
- US2714498A US2714498A US284190A US28419052A US2714498A US 2714498 A US2714498 A US 2714498A US 284190 A US284190 A US 284190A US 28419052 A US28419052 A US 28419052A US 2714498 A US2714498 A US 2714498A
- Authority
- US
- United States
- Prior art keywords
- discs
- outer tube
- bolt
- tube
- pin
- 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
- 230000037431 insertion Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
- E21D15/20—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with pawl, pin, cross-piece, or the like engaging with ratchet teeth, notches, holes, or the like, spaced apart at intervals
-
- 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
- E04G25/00—Shores or struts; Chocks
- E04G25/04—Shores or struts; Chocks telescopic
- E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
-
- 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
- E04G25/00—Shores or struts; Chocks
- E04G25/04—Shores or struts; Chocks telescopic
- E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
- E04G25/061—Shores or struts; Chocks telescopic with parts held together by positive means by pins
-
- 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
- E04G25/00—Shores or struts; Chocks
- E04G25/04—Shores or struts; Chocks telescopic
- E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
- E04G25/065—Shores or struts; Chocks telescopic with parts held together by positive means by a threaded nut
-
- 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
- Y10T403/32—Articulated members
- Y10T403/32254—Lockable at fixed position
- Y10T403/32426—Plural distinct positions
- Y10T403/32442—At least one discrete position
- Y10T403/32451—Step-by-step adjustment
- Y10T403/32459—Retainer extends through aligned recesses
-
- 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
- Y10T403/70—Interfitted members
- Y10T403/7075—Interfitted members including discrete retainer
- Y10T403/7077—Interfitted members including discrete retainer for telescoping members
- Y10T403/7079—Transverse pin
- Y10T403/7086—Wedge pin
Definitions
- the present invention concerns a prop or shore such as used in making ceiling boardings in building.
- Props and shores having an inner tube or pipe mounted upon a stand plate, and over which fits, in telescopic manner, an outer tube provided with holes for passing through a pin or bolt.
- kind have the disadvantage that, on tightening up by means of suitable screwing means, many rotations of the outer pipe may have to be effected with the help of the inserted bolt because in an unfavourable case the full distance between two holes in the vertical direction has to be traversed by screwing the bolt carrying the ceiling plate out of the nut.
- a prop or shore of the kind described is characterised in that the inner tube or pipe at its upper end supports a pile of discs displaceable axially within the outer tube so that the pin when inserted through the next insertion hole above the upper end of the inside tube may be passed between two adjacent discs.
- the total height of these superimposed discs will correspond approximately to the distance between two vertically separated insertion holes.
- a sleeve acting as a container for the discs and having two longitudinal slots lying opposite for passing through the pin or bar.
- Figure 1 shows an axial section of an embodiment.
- Figures 2 and 3 show in each case an alternative crosssectional form for the discs.
- Figure 4 is an axial section through a further embodiment of the invention.
- An inner tube 3 is placed on the ground 1 by means of a stand plate 2. This inner tube is closed off by means of a cover disc 4 at its top end.
- An outer tube 5 fits in telescopic manner over the top of the inner tube 3, this outer tube being furnished with holes 6 for passing through a bolt or pin 7.
- the top end of the outer tube 5 is closed by means of a nut part 8, into the central screw-threaded hole of which is screwed a threaded bolt 9.
- This bolt is provided at its top end with a support plate intended to be locked against a ceiling boarding 11.
- the supporting plate 10 is provided with a protecting neck or collar 12, the inside diameter of which is dropping out when the Props or shores of this on the cover part of the 2,714,498 Patented Aug.
- a pile of discs 13 is placed on the covering disc 4 of the inside tube 3, the outer diameter of these discs being somewhat less than the internal diameter of outer tube 5 so that these discs can easily be displaced axially inside tube 5.
- the discs have individually the shape of a truncated cone and they are placed upon one another in such a manner that their larger round surface always lies at the top. The total height of these discs corresponds approximately to the distance between two vertically separated holes 6.
- the pin 7 can be inserted into the first pair of holes 6 situated above the disc 4 between two superimposed discs, the upper discs being moved away from the lower ones by the pin owing to their conical shape.
- the outer tube 5 can, after the insertion of the pin or bolt, drop back at most the amount of the height of one of discs 13, so that afterwards only this small distance has to be traversed by screwing out bolt 9, and hence the support plate 10, before engagement is produced.
- the end 71 of bolt 7 is tapered in order to facilitate insertion.
- the discs 13 may also, as indicated in Figures 2 and 3, have the form of a double truncated cone or of a lens, so that they still act even when one of the discs turns over inside the outer tube 5.
- These discs 13 are preferably ordinary cast or turned members.
- the disc members 13 are preferably so dimensioned that their height is less than 2 cm.
- the reference numeral 1 designates the floor upon which is resting a stand plate 2' of inner tube or pipe 3.
- the top closure member 4' of the inner tube is reinforced and possesses an axial screw-threaded bore.
- a pin 19' is capable of rotating, said pin belonging to a supporting plate 10' intended to be pressed against a ceiling surface 11'.
- a screw-threaded bolt 20' is screwed into the bore of the cover of the inside tube, the top plate 21 of the bolt forming the bottom of the cylindrical sleeve 22' and being rigidly connected thereto.
- Said sleeve which is inserted into the outer tube possesses two oppositely lying slots 23 to allow of the pin or bar 7 being inserted in any position as regards height of sleeve 22.
- the sleeve forms a closed container for the lens-shaped discs 13 so that they cannot drop out when the whole support is being dismantled.
- a pressure or compression spring 24 is also inserted into the sleeve bearing on the topmost disc and against the inside part of the sleeve cover part 25. Cover 25' can be screwed out of the sleeve 22' so as to allow the discs 13' and the spring 24' to be inserted. In this way the discs always remain in the position which is shown and cannot get lost.
- the bar 7 is then passed through a suitable hole 6' and to do this it may be necessary to move the outer tube 5 round a bit before the bar can pass through slots 23 in the sleeve and pass out at the opposite hole 6'.
- the bolt 7 slips in between two discs 13.
- bolt 20' is likewise turned on account of the rigid connection between sleeve 22 and said bolt and it is screwed upwards out of the stand pipe cover 4' and it forces through the medium of discs 13 lying under the bar and the bar itself the outer tube 5' upwards, while the support plate 10' remains in position. After sufficiently strong locking the support is in the position of use, as shown, from which it may be removed by turning back outer tube 5 and withdrawing the bar.
- a prop or shore comprising an inner tube, an outer tube fitting telescopically thereover and provided with vertically spaced holes, screw means for expanding or shortening the length of the prop or shore, a pile of discs having bevelled edges supported on the upper end of the inner tube and individually displaceable in the axial direction inside the outer tube and of total height corresponding approximately to the distance between two adjacent holes of said spaced holes in the outer tube, and a pin adapted to be selectively inserted through one of the holes in the outer member and disc pile, after extending the prop or shore telescopically to a desired separation.
- each of the discs is formed as a truncated cone the larger circular surface of which lies at the top and corresponds in its diameter to the inside diameter of the outer tube.
- each of the discs is formed as a symmetrical double truncated cone the largest diameter of which is smaller than the inside diameter of the outer tube.
- each of the discs is formed as in a lens shape the largest diameter of which is slightly smaller than the inside diameter of the outer tube.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH695937X | 1951-04-30 | ||
CH909627X | 1951-04-30 | ||
CH2714498X | 1951-04-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2714498A true US2714498A (en) | 1955-08-02 |
Family
ID=27178546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US284190A Expired - Lifetime US2714498A (en) | 1951-04-30 | 1952-04-24 | Props or shores |
Country Status (3)
Country | Link |
---|---|
US (1) | US2714498A (de) |
GB (1) | GB695937A (de) |
NL (1) | NL80573C (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3285656A (en) * | 1965-07-26 | 1966-11-15 | System Communica Aktiebolag | Height adjusting devices for chairs, tables, and the like |
US3503455A (en) * | 1967-07-11 | 1970-03-31 | Deere & Co | Overload trip device |
US4718628A (en) * | 1986-03-21 | 1988-01-12 | Michael Vitta | Adjustable shore |
US4752057A (en) * | 1986-04-18 | 1988-06-21 | Hunnebeck Gmbh | Steel tube prop with rapid release |
US5054730A (en) * | 1990-02-12 | 1991-10-08 | Pensoneau Excavating Co., Inc. | Pipe strut system and method for using same |
WO1996001353A1 (en) * | 1994-07-01 | 1996-01-18 | Concept 2000 Pty. Ltd. | A prop |
US5667189A (en) * | 1995-04-13 | 1997-09-16 | Kester; Michael H. | Self-supporting flow hood |
WO1999002915A1 (en) * | 1997-07-11 | 1999-01-21 | Southland Supply Company, Inc. | Adjustable leg |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112648332A (zh) * | 2020-12-03 | 2021-04-13 | 北京科技大学 | 一种球形胞孔梯状变形矿压控制器及方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB213317A (en) * | 1922-12-06 | 1924-04-03 | William Bateman Atkinson | Improvements in or relating to building supports |
DE703063C (de) * | 1939-04-25 | 1941-02-27 | Bergwerksbedarf G M B H Fab F | Eiserner Grubenstempel |
-
0
- NL NL80573D patent/NL80573C/xx active
-
1952
- 1952-04-18 GB GB9776/52A patent/GB695937A/en not_active Expired
- 1952-04-24 US US284190A patent/US2714498A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB213317A (en) * | 1922-12-06 | 1924-04-03 | William Bateman Atkinson | Improvements in or relating to building supports |
DE703063C (de) * | 1939-04-25 | 1941-02-27 | Bergwerksbedarf G M B H Fab F | Eiserner Grubenstempel |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3285656A (en) * | 1965-07-26 | 1966-11-15 | System Communica Aktiebolag | Height adjusting devices for chairs, tables, and the like |
US3503455A (en) * | 1967-07-11 | 1970-03-31 | Deere & Co | Overload trip device |
US4718628A (en) * | 1986-03-21 | 1988-01-12 | Michael Vitta | Adjustable shore |
US4752057A (en) * | 1986-04-18 | 1988-06-21 | Hunnebeck Gmbh | Steel tube prop with rapid release |
US5054730A (en) * | 1990-02-12 | 1991-10-08 | Pensoneau Excavating Co., Inc. | Pipe strut system and method for using same |
WO1996001353A1 (en) * | 1994-07-01 | 1996-01-18 | Concept 2000 Pty. Ltd. | A prop |
GB2304752A (en) * | 1994-07-01 | 1997-03-26 | Concept 2000 Pty Ltd | A prop |
GB2304752B (en) * | 1994-07-01 | 1998-08-05 | Concept 2000 Pty Ltd | A prop |
US5667189A (en) * | 1995-04-13 | 1997-09-16 | Kester; Michael H. | Self-supporting flow hood |
WO1999002915A1 (en) * | 1997-07-11 | 1999-01-21 | Southland Supply Company, Inc. | Adjustable leg |
US6032914A (en) * | 1997-07-11 | 2000-03-07 | Southland Supply Company, Inc. | Adjustable leg |
Also Published As
Publication number | Publication date |
---|---|
GB695937A (en) | 1953-08-19 |
NL80573C (de) |
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