US2162604A - Securing of rail-chairs to sleepers - Google Patents

Securing of rail-chairs to sleepers Download PDF

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Publication number
US2162604A
US2162604A US166458A US16645837A US2162604A US 2162604 A US2162604 A US 2162604A US 166458 A US166458 A US 166458A US 16645837 A US16645837 A US 16645837A US 2162604 A US2162604 A US 2162604A
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United States
Prior art keywords
securing
screw
thread
chair
tool
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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US166458A
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English (en)
Inventor
Clow Alfred Cecil
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Individual
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Individual
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Publication of US2162604A publication Critical patent/US2162604A/en
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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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/14—Non-metallic plugs or sleeves; Use of liquid, loose solid or kneadable material therefor
    • F16B13/141—Fixing plugs in holes by the use of settable material
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
    • E01B31/20—Working or treating non-metal sleepers in or on the line, e.g. marking, creosoting
    • E01B31/26—Inserting or removing inserts or fillings for holes in sleepers, e.g. plugs, sleeves
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E01B9/04—Fastening on wooden or concrete sleepers or on masonry without clamp members
    • E01B9/14—Plugs, sleeves, thread linings, or other inserts for holes in sleepers
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E01B9/04—Fastening on wooden or concrete sleepers or on masonry without clamp members
    • E01B9/14—Plugs, sleeves, thread linings, or other inserts for holes in sleepers
    • E01B9/16—Plugs, sleeves, thread linings, or other inserts for holes in sleepers for wooden sleepers
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/14—Non-metallic plugs or sleeves; Use of liquid, loose solid or kneadable material therefor
    • F16B13/141—Fixing plugs in holes by the use of settable material
    • F16B2013/147—Grout with reinforcing elements or with fillers, e.g. fibres, flakes, balls, wires

Definitions

  • This invention relates to the securing of railchairs tosleepersandr-isrconcerned especially, though not exclusively, with the re-bushing of the holes in wooden or concrete railway sleepers to provide a firm hold for the chair-securing screws after these have worked loose due to shrinkage and/or decay of the wood, the stripping of the threads in the walls of the holes or like causes.
  • 'Ihe object of the present invention is the provision of an improved method facilitating the securing of the chair-securing screws in a rapid, simple and effective manner.
  • the method of securing a rail-chair to a sleeper comprises the steps of filling a hole in the sleeper with a plug, which consists of a plastic mass capable of hardening to a solid non-plastic mass, forming a screw-threaded bore in the plug while this is still plastic to present a thread of substantially the same pitch and external Adiameter as but of greater depth than that of a chair-securing screw, and screwing a chair-securing screw into the said bore prior to the hardening of the plug.
  • a plug which consists of a plastic mass capable of hardening to a solid non-plastic mass
  • Figs. 1, 2 and 3 are vertical sections illustrating stages in the performance of a preferred form of execution of the method of the inven tion
  • Fig. 4 isa similar view illustrating, in particular, a modied form of tool.
  • the hole I in a railway sleeper 2 left by the removal of a chair-securing screw which is no longer effective is filled with a plastic mass 3 capable of hardening to a solid mass and the llingis tamped down with a heavy rammer to the level of the surface of the sleeper (Fig. 1).
  • a suitable plastic mass is a moistened mixture of asbestos fibres, advantageously long fibres (about 3" or so in length), and cement, with or without iilling materials such aspumice powf der or the like.
  • Other plastic compositions may, however, beA used, for example, fibres such as asbestos mixed with a yheated bitumen or highmelting point pitch.
  • the plugged hole is then pierced axially by means of a tool 4 (Fig. 2)r comprising an operative end portion of substantially the same shape as a chair-securing screw.
  • the tool has a screwthread 5, which is of the same pitch (and preferably of substantially the same external diameter) Yas thatl ofthe screw, and ⁇ a downwardly tapering core 6 which is of slightly smaller diameter at its upper end than the core at the screw, so that the depth of the thread on the tool, i. e., the dimension a, is greater than that on the screw throughout its length. It is preferred that the depth of the thread on the tool increase in the downward direction although the thread may be of substantially constant depth throughout as shown in Fig. 2.
  • the summit of the thread on the tool is slightly rounded and preferably polished, the nal turn l of the thread near the point 8 of the tool diminishing in height from the maximum to zero in, approximately, half the pitch length.
  • the tool-point 8 is tapered to produce a sharp end projecting beyond the final turn of the thread.
  • the length of the thread is preferably slightly greater than that of the thread of the chair-securing screw.
  • the tool has a shank portion 9 which may be of slightly smallerV diameter than the shank of the chair-securing screw, a collar I0 and a squared head Il or the like by means of which the tool may be rotated about its aXiS;
  • the maximum diameter of the moulded thread is also slightly smaller on account of the rounding of the summit of the tool-thread and may decrease in the downward direction as illustrated in Fig. 3.
  • the rail-chair securing ⁇ screw I3 (Fig. 3) is then screwed home in the screw-threaded bore I4 thus produced.
  • the tool may be bored axially to accommodate a piercing implement I6 with a head II whereby it is adapted to be driven into the plastic mass or plug prior to the tool proper.
  • Fig. 4 also shows, incidentally, how 'a box-Spanner I8 with a tommy-bar I9 is applied to the squared head I I.
  • the head I'I of the piercing implement I8 enters a recess 2U in the Spanner.
  • the wall of the hole I in the sleeper may have a groove or thread cut therein prior to the insertion of the plug 3. Such a groove is shown at 2l' in Fig. 4.
  • the expanded plug-material is forced into the groove and enhances the keying effect.
  • the hole I may also have a larger diameter at or near the bottom than the diameter at or near the top.
  • the method according to the invention has the great advantage that a loose screw may be re-l moved and all subsequent steps eiected for replacing the screw as a tight t without the railchair I2 being displaced or disturbed in any way.
  • a method of securing rail-chairs to sleepers comprising the steps of filling the entire crosssection of a hole in the sleeper with a non-metallic mass in a plastic state which is capable of hardening to a solid non-plastic mass, tamping the plastic mass in place, forming a screw-threaded bore in the mass in the hole while still plastic to present a thread of substantially the same pitch and external diameter as but of greater radial depth than that of a chair-securing screw and screwing a chair-securing screw into the said bore prior to the hardening of the mass to its non-plastic state.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Road Paving Structures (AREA)
US166458A 1936-10-12 1937-09-29 Securing of rail-chairs to sleepers Expired - Lifetime US2162604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27706/36A GB483154A (en) 1936-10-12 1936-10-12 Improvements in or relating to the securing of rail-chairs to sleepers

Publications (1)

Publication Number Publication Date
US2162604A true US2162604A (en) 1939-06-13

Family

ID=10263971

Family Applications (1)

Application Number Title Priority Date Filing Date
US166458A Expired - Lifetime US2162604A (en) 1936-10-12 1937-09-29 Securing of rail-chairs to sleepers

Country Status (5)

Country Link
US (1) US2162604A (en:Method)
BE (1) BE419438A (en:Method)
FR (1) FR816228A (en:Method)
GB (1) GB483154A (en:Method)
NL (1) NL47398C (en:Method)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2690877A (en) * 1948-09-03 1954-10-05 Snyder Jacob Rush Fastening for railway rails
US2690876A (en) * 1948-09-03 1954-10-05 Snyder Jacob Rush Fastening for rails
US2690879A (en) * 1948-05-25 1954-10-05 Snyder Jacob Rush Metal-to-wood fastening for railway ties
US3192556A (en) * 1962-08-20 1965-07-06 H J Scheirich Company One-piece plastic hinge
US20200378069A1 (en) * 2019-05-29 2020-12-03 Schwihag Ag Rail Fastening System
US11306442B2 (en) * 2018-07-19 2022-04-19 Schwihag Ag Rail fastening system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2690879A (en) * 1948-05-25 1954-10-05 Snyder Jacob Rush Metal-to-wood fastening for railway ties
US2690877A (en) * 1948-09-03 1954-10-05 Snyder Jacob Rush Fastening for railway rails
US2690876A (en) * 1948-09-03 1954-10-05 Snyder Jacob Rush Fastening for rails
US3192556A (en) * 1962-08-20 1965-07-06 H J Scheirich Company One-piece plastic hinge
US11306442B2 (en) * 2018-07-19 2022-04-19 Schwihag Ag Rail fastening system
US20200378069A1 (en) * 2019-05-29 2020-12-03 Schwihag Ag Rail Fastening System

Also Published As

Publication number Publication date
NL47398C (en:Method)
GB483154A (en) 1938-04-12
FR816228A (fr) 1937-08-03
BE419438A (en:Method)

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