Connect public, paid and private patent data with Google Patents Public Datasets

Dowel-pin for electrical conduits.

Download PDF

Info

Publication number
US825069A
US825069A US1905247488A US825069A US 825069 A US825069 A US 825069A US 1905247488 A US1905247488 A US 1905247488A US 825069 A US825069 A US 825069A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
dowel
pin
tile
holes
pins
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
Application number
Inventor
Ralph S Peirce
Original Assignee
Ralph S Peirce
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B7/00Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/04Clamping or clipping connections
    • F16B7/0406Clamping or clipping connections for rods or tubes being coaxial
    • F16B7/0413Clamping or clipping connections for rods or tubes being coaxial for tubes using the innerside thereof
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/16Joints and connections with adjunctive protector, broken parts retainer, repair, assembly or disassembly feature
    • Y10T403/1616Position or guide means
    • Y10T403/1624Related to joint component
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/55Member ends joined by inserted section

Description

PATENTED JULY 3, 1906.

DOWEL PINPOR BLEO'IiRICAL OONDUITS.

APPLICATION FILED FEB.27.1905.

1; A1 1 P ECE.

Specification of Letters Patent.

Patented July 3, 1906.

Application filed February 27, 1905. Serial No= 247,488.

"To all whom it may concern,- Be it known that I, RALPH S. PEIROE, a

citizen of the United States of America, and

.aresident of Chicago, county of Cook, and

State of Illinois, have invented a new, and useful Improvement in Dowel-Pins for Elec- .-ti ical Conduits, of which the following'is a L conduits.

t5" ,gun'g one or more ducts, this being of vitrified "clay; The clay tile as delivered by the man-.

specification.

invention relates to an improvement in dowehpins for securing the proper alinement between the several sections of material used in the building of underground electrical A large portion of the underground con- .duits' now in use is built of sections of tile havufactur'er is provided at each end with holes for dowel-pins, the holes in the ends of the tion is lia adjoining sections being so located as to register with each other when the tile is in proper position: To secure the proper alinement during the laying of the tile, dowel pins of various forms are used, these being inserted first into the holes of a piece of tile that has been laid in such manner that the protruding ends will enter the in the piece of tile being laid in such manner asto cause the proper registration of the ductor ducts Within the tiles. The dowelpins for this purpose have in the past been made of solid pieces of iron with a shoulder or projection about midway'in their length to assure the dowel-pin projecting a proper distance into each section. In other cases wood pins have been usedfor this purpose.

Both of these forms are ob ectionable for .the following reasons; The solid iron dowelpins are inflexible, and therefore when thrust or driven into a hole in the tile that is through some irregularity too small a cracking of the tile around the hole is caused, which either renders the tile unfit for use or at best roughens the wall of gree. The holes in difleren't tiles of the same lot or of different lots often vary in size, so that a number of different sizes of dowelpins have to be carried in stock to assure proper fitting of the tiles together. Again, a solid iron in of ordinary form and construcle to rust on account of the presence of moisture, and this in such cases has been found to cause such an expansion of the pins or of rust on the pins as to cause the subsequent breakim of the tile and injury of the duct. Still another objection to this form corresponding holes v holes'in the end of this section.

the duct to an undesirable deoverlap each other, jected to compressive stress it will yield and 105 of pin is that it is of considerable weight, which is objectionable in theinutter of transportation, but more so in the handling in the trench. The wooden pins have the advan- 6o tage of being cheap, but are subject to even greater objection in the point of expansion, due to the presence of moisture and to some extent due to excessive rigidity, which in the case of distorted dowel-holes or holes that are out of alinclnent may cause breakage of the tile. Thcseobjections on the part of the types of pins in use at the time of my invention are rendered all the more serious because setting which causes pieces of the inner wall of the ducts to break off and fall within the duct may cause the most serious damage to the cables subsequently to be carried in the of the fact that any breakage of the tile after duct, either in the drawing in or subsequent drawing out of the cable. Sharp pieces of hard burnt clay falling within a duct after a cable had been drawn in may easilyrendcr the subsequent withdrawal of the cable from the duct an impossibility or the lead sheath in the process of withdrawal as to ruin the cable. It is to the remedy of these objectionable features that my present invention is directed.

My invention is illustrated inth'c accompanying sheet of drawings, in whicli Figure 1 is a perspective view of a single section of six-duct clay tile, showing one of my im roved dowel-pins inserted and anot er a out to be inserted in the two dowel- Fig. 2 is a perspective view of a dowel-pin embodying my invention in its preferred form. Fig. 3 is a sectional view of the pin, taken on the line 3 of Fig. 2. modified form of my invention, and Fig. 5 is a sectional view taken on the line 5 of Fig. 4.

As will be seen from the drawings, the dowel-pin embodying my invention is made in tubular form from a piece of sheet metal 100 0, preferably iron rolled up from a flat sheet. The edges 1) and c of the sheet are in the preferred form (shown in Figs. 2 and 3) caused to so" that if the tube is subbecome smaller in diameter, the overlapping sections'sliding by each other in an obvious manner. In this way the pin will adapt itself to almost any size of dowel-hole without causing such strain to come on the walls 1 IO of the tile as to cause breakage.

The ends of the tube are made somewhat smaller by so greatly abrade'8o Fig. 4 is a perspective view of a 5 is little whether or not them in his feature oflig 5 Sure the the holes, such as g,

Fig. '3, thus facilitating the drivingof the dowel-pin'sinto holes of somewhat smaller than standard size and aiding the insertion? of the tube into any size of h Aboi'it midway'in the length'of the tube is a pro'ection'j, preferably struck up from the meta before it. is rolledintotubularform.

rojection,; which may be of any desired orm, serves merely-sea stop in theinserti'on of the pin into theztile, so as to asequal distance in each.

standard piece ofsix-duct clay tile is clearly.

shown in Fig. 1,-the pins ture of the tile, cause the proper re tration of the ducts h mthe two sections, t us formin a continuous duct for the passageof the cales.

As the sections of the tiles' iare lai cl'they are embedded in av m'as's'of concrete., ;suitab le and.we ll known means being taken to. prevent the entrance of concrete or/mortar while in a plastic state .throughffitheinterabutting edges of When so laid and after the constioes formed between the continuous rigid structure, an it matters the'dowel-pins have any subsequent holding force. In fact, it may be stated that the function of the dowel-pin is to assure proper alinement during the laying-of the tile and loses its strength in future no harm is done.

For this reason the pins .madeinaccordance with my invention may be of comparatively thin iron ungalvanized, and when so made are of comparatively 'lcheap construction. Again, the pins. are so light. that'a workman may carry a com aratively large number of 00 et during work, and this tness has an additional advantage in the matter of trans ortation.

The fact that dowel-pinsmad e in accordance with my invention are not rigid as to their size adapts them readily to tile having used, since-the insdowel-holes differing in considerable degree.

as to diameter.

lmperfectly formed holes and holes slightly out of alinement m'a be may be driven in wit out danger of brea age to the duct material.

In 4 and .Jform of dowel-pin "scribed, as I consider-that other forms of 7 those herein specifically illustrated{having fielding. sides would lie thescope of projection of the "pin toabout an ofthe abutting tiles. The methodof applying the dowel-pin to a being inserted into- 'Ini until the stop f engages the face of the tile,'and fromtlns it Wlll be obvious that when .the next section of thetile-is laid in place the projectionof'the ins into the holes 9 of that section will,if t ose adaptable for s' holes are properly located in the mainline that if, it rests through and'. than negligible separation of substantial 5 are shown a modified form able space being left'between them: This ofmy improveddowel-pin, the difl'erencebe= provides for the contractionin the size of the practice. v I

I do not-wish to limit myself'to the exact herein shown and dedowel-pins than;

' 'my invention. For inted sheet metal stance, a pin [of- 1cc e proper degree of 7 ht be used-to secureit Tding when inserted. in the dowel-holes.

a either do-I wishrtd'liniit myself to dowelpins to he used exclusively for the laying of clay .ftile; since :the; doweiepin is obviously ar-purposes in' other arts. 8 Having thus described my invention, what I claim as new, and desire to secure by LettersPatent, is I 1. As an article of manufacture, a tubular dowel-pin having tapered ends and havin at 8 a point in its middlelength a lateral projectimi of a thickness to be negligible in the use of the dowel-pin, substantially as described. 2. As an article of manufacture, a sheetinetal dowelepin having its endstapered and 9 be in a manner that proves satisfactory of sai dowel-pin to'limit'its insertion.

1 3. As an article 0 manufacture, a sheetmetal dowel-pin. for alining sections of tile,

said dowel-pinhaving tapered ends andhav- 9 ing at a point in its middle length a pro'ec' tion struck up from the sheet metal'an of v y as described. =1 4. As an article of manufaptnre, a dcwjel- 3 pin for alining sections of tileconsisting of a sheet of metal rolled into tu ular form, the

adjacent-edges of said sheet along the len' th m va thfiies projecof the tubular dowel-pin being respect to each other, and a lateral tion being struck up from the .sheetmetal ."of;

said tube in the center of said dowel-pin for:-

limiting scribed. I i

Signed by -me atChicago, State of Illinois, nesses.

its insertion, substantially I as :de-

county e f-Cook} 1n the'presence of two wit} .L'RaLPii s. raises." Witnesses: i

' such small thicknesses to produce. not more 1:

the tile ends,i

US825069A 1905-02-27 1905-02-27 Dowel-pin for electrical conduits. Expired - Lifetime US825069A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US825069A US825069A (en) 1905-02-27 1905-02-27 Dowel-pin for electrical conduits.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US825069A US825069A (en) 1905-02-27 1905-02-27 Dowel-pin for electrical conduits.

Publications (1)

Publication Number Publication Date
US825069A true US825069A (en) 1906-07-03

Family

ID=2893549

Family Applications (1)

Application Number Title Priority Date Filing Date
US825069A Expired - Lifetime US825069A (en) 1905-02-27 1905-02-27 Dowel-pin for electrical conduits.

Country Status (1)

Country Link
US (1) US825069A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582062A (en) * 1948-07-30 1952-01-08 Elastic Stop Nut Corp Machine for making spring dowel pins
US2668607A (en) * 1948-08-12 1954-02-09 Chicago Bridge & Iron Co Supporting column
US2684588A (en) * 1950-11-22 1954-07-27 Alan L Robertson Plastic-filled masonry wall
US2737843A (en) * 1952-02-01 1956-03-13 C E M Company Resilient coiled sheet metal fastening pin
US2972275A (en) * 1958-02-27 1961-02-21 Elastic Stop Nut Corp Resilient split pin with inwardly extending portion
US3036407A (en) * 1957-11-12 1962-05-29 Daniel R Dixon Building block assembly
US3182768A (en) * 1960-07-18 1965-05-11 Westinghouse Electric Corp Lighting fixture
US3352191A (en) * 1965-04-23 1967-11-14 Allan H Crawford Dowel
US4043854A (en) * 1975-11-26 1977-08-23 Noane Georges Le Method and apparatus for splicing optical fiber cables
US4441288A (en) * 1981-10-26 1984-04-10 Allied Surveyor Supplies Mfg. Company Break-away sectionalized driven rod
US4474493A (en) * 1982-09-09 1984-10-02 Modular Systems, Inc. Dowel fastener and joints including same
US4776144A (en) * 1985-01-31 1988-10-11 National Concrete Masonry Association Roof paver connector and system
US20050100399A1 (en) * 2003-11-07 2005-05-12 Welch Montgomery J. Dowel fastener and joints including same
US20060228193A1 (en) * 2005-04-07 2006-10-12 Michael Apsey Dowel with locking features and method of using the same

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582062A (en) * 1948-07-30 1952-01-08 Elastic Stop Nut Corp Machine for making spring dowel pins
US2668607A (en) * 1948-08-12 1954-02-09 Chicago Bridge & Iron Co Supporting column
US2684588A (en) * 1950-11-22 1954-07-27 Alan L Robertson Plastic-filled masonry wall
US2737843A (en) * 1952-02-01 1956-03-13 C E M Company Resilient coiled sheet metal fastening pin
US3036407A (en) * 1957-11-12 1962-05-29 Daniel R Dixon Building block assembly
US2972275A (en) * 1958-02-27 1961-02-21 Elastic Stop Nut Corp Resilient split pin with inwardly extending portion
US3182768A (en) * 1960-07-18 1965-05-11 Westinghouse Electric Corp Lighting fixture
US3352191A (en) * 1965-04-23 1967-11-14 Allan H Crawford Dowel
US4043854A (en) * 1975-11-26 1977-08-23 Noane Georges Le Method and apparatus for splicing optical fiber cables
US4441288A (en) * 1981-10-26 1984-04-10 Allied Surveyor Supplies Mfg. Company Break-away sectionalized driven rod
US4474493A (en) * 1982-09-09 1984-10-02 Modular Systems, Inc. Dowel fastener and joints including same
US4776144A (en) * 1985-01-31 1988-10-11 National Concrete Masonry Association Roof paver connector and system
US20050100399A1 (en) * 2003-11-07 2005-05-12 Welch Montgomery J. Dowel fastener and joints including same
US6991397B2 (en) 2003-11-07 2006-01-31 Modular Systems, Inc. Dowel fastener and joints including same
US20060228193A1 (en) * 2005-04-07 2006-10-12 Michael Apsey Dowel with locking features and method of using the same
US7241095B2 (en) * 2005-04-07 2007-07-10 Driv-Lok, Inc. Dowel with locking features and method of using the same

Similar Documents

Publication Publication Date Title
US2235646A (en) Masonry
US1921642A (en) Pipe joint and method of forming same
US4619087A (en) Barrier-embedded pipe-coupling apparatus and method
US1950947A (en) Pipe fitting member
US4617715A (en) Method for preliminary anchoring of a wire rope bolt
US2089790A (en) Method of forming a rolled joint
US892105A (en) Combined pipe support and clamp.
US4028796A (en) Method of making a blast joint
US4120083A (en) Method of pipe joining
US3100323A (en) Cable coupler
US1682840A (en) Gutter joint
US2005699A (en) Conduit and like construction
US4064619A (en) Method of joining plastic coated pipe
US4302874A (en) Method of forming pipe union
US2138913A (en) Automatic line splice
US2315792A (en) Adapter
US2100570A (en) Anchoring device
US2677174A (en) Device for pulling blast furnace bosh plates
US2795440A (en) Joint and method of uniting carbon bodies
US1941022A (en) Method of assembling clutch parts
US4114344A (en) Concrete reinforcement splice with location tab
US2290430A (en) Internal coupling for awning rollers
US1447515A (en) Wall socket
US3677580A (en) Adjustable pipe coupling
US2100873A (en) Dowel structure