US3274707A - Connecting member for a board for educational purposes and a board incorporating such a member - Google Patents

Connecting member for a board for educational purposes and a board incorporating such a member Download PDF

Info

Publication number
US3274707A
US3274707A US357227A US35722764A US3274707A US 3274707 A US3274707 A US 3274707A US 357227 A US357227 A US 357227A US 35722764 A US35722764 A US 35722764A US 3274707 A US3274707 A US 3274707A
Authority
US
United States
Prior art keywords
bar
slot
connecting member
longitudinally extending
board
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
US357227A
Other languages
English (en)
Inventor
Garden William Brownie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WILSON AND GARDEN Ltd
Original Assignee
WILSON AND GARDEN Ltd
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
Application filed by WILSON AND GARDEN Ltd filed Critical WILSON AND GARDEN Ltd
Application granted granted Critical
Publication of US3274707A publication Critical patent/US3274707A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/04—Blackboards
    • B43L1/08—Blackboards flexible
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/16—Belt fasteners
    • Y10T24/168—Flanged belt ends, connector hold ends

Definitions

  • This invention relates to an improved connecting member for a board for educational purposes and to a board incorporating such a member, the board being of the type comprising an endless band constituted by a flexible sheet of blackboard surfacing or other material capable of hearing indicia, the opposed ends of said sheet being interconnected by a connecting member and the sheet being entrained over top and bottom rollers carried by a frame presented by spaced uprights.
  • a connecting member comprises a hollow bar of trapezoidal cross-section having a longitudinally extending slot formed in one side of the bar, longitudinally extending channels being so formed within the bar adjacent to the side walls of the bar on either side of the slot as to be open to the interior of the bar adjacent to the side thereof remote from the side in which the slot is formed whereby the end portions of the sheet associated with the opposed ends thereof to be interconnected may be so located within the slot, with said ends, which present substantially rigid members, positioned within the channels, that insertion and removal of said end portions of the sheet into and from the bar, respectively, in other than the longitudinal direction are prevented.
  • the opposed ends of the flexible sheet of blackboard surfacing or other material capable of bearing indicia are interconnected by a connecting member as defined in the last preceding paragraph.
  • FIG. 1 is an elevation view of one embodiment of a connecting member, according to the invention, interconnecting the opposed ends of the sheet, only the end portions of the sheet associated with said ends being shown
  • FIG. 2 is a view in the direction of the arrow A of FIG. 1.
  • 1 denotes generally a hollow bar of trapezoidal cross-section the bar 1 consisting of two parallel, spaced sides 2, 3- the side 2 being of narrower width than the side 3 and having formed therein a longitudinally extending slot 4, and two sides 5 which interconnect the longitudinally extending edges of the sides 2, 3 and which are mutually divergent in the direction from the side 2 towards the side 3, the sides 5 being equally inclined to the plane containing the side 2 and also, of course, to the plane containing the side 3.
  • the sides 5 being inclined as indicated above facilitate the use of the connecting member as a handgrip by means of which the endless band may operatively be manually turned, the sides 5, or one of the sides 5, being if desired, embossed or otherwise formed for ease in performing this operation.
  • longitudinally extending plates 6 disposed parallel to and spaced from the sides 5 are mounted within the bar 1, one longitudinally extending edge of one of the plates 6 being attached to the longitudinally extending edge of the side 2 defining one edge of the slot 4 and one longitudinally extending edge of the other plate 6 being attached to the longitudinally extending edge of the side 2 defining the other edge of the slot 4.
  • Longitudinally extending flanges 8 disposed co-planar with the side 2 of the bar 1 are each attached along one longitudinally extending edge thereof to one of the longitudinally extending edges of the side 2 attached to the sides 5, the flanges 8 being in contact with the outside surface 9 of the endless band 10 when the connecting member is in use.
  • the connecting member which is preferably metallic, may conveniently be formed by an extrusion process from a single strip of material, the strip of material being longitudinally bent at the junctions of the side 3 and the sides 5 through an obtuse angle, at the junctions of the sides 5 and the flanges 8 through the same obtuse angle, at the longitudinally extending edges of the flanges 8 where the strip of material is refiexly bent, and at the junctions of the side 2 and the plates 6 through an obtuse angle.
  • edges of the plates 6 remote from the side 2 are preferably constituted by reflex bends formed in the edge portions of the strip of material, as illustrated, thereby obviating or mitigating any risk of said edges causing chafing of the end portions 11 of the flexible sheet 10 constituting the endless band, which are operatively disposed in contact with said edges as is hereinafter described.
  • the connecting member may alternatively be consituted by a plurality of parts (not shown) and in particular the side 3, the sides 5 and the surfaces of the flanges 8 facing the side 3 may be formed of one strip of material and the plates 6, the side 2 and the surfaces of the flanges -8 facing away from the side 3 may be formed of a second strip of material, the two surfaces of each flange 8 being interconnected as :by spot welding or riveting.
  • the flanges 8 are twice the thickness of the sides 2, 3, 5 of the bar 1.
  • Plug pieces 12 may be provided, each plug piece 12 comprising a shank portion 13 and an end plate '14 the shank portion 13 when the connecting member is operatively in use, being disposed within the bar 1 and being secured between the plates '6 with the end plate 14 covering the end of the connecting member thereby to prevent unintentional axial movement of the bar '1 relative to the ends of the sheet 10 interconnected thereby.
  • the flexible sheet 10 which when the opposed ends thereof are interconnected constitutes the endless !band, is disposed around the top and bottom rollers of the board with the opposed ends thereof adjacent and the end portions ill of the sheet associated wit-h said ends thereof are interconnected by reflexly bending the end portions 11 and sliding the end portions 1 1 axially through the longitudinal slot 4 in the side 2 of the bar 1, which serves to interconnect the end portions '11 with rigid blades attached to the opposed ends of the end portions !11 being axially slid into the channels 7, the sheet 10 projecting from the slot 4 in opposite directions so that the surfaces of the flanges 8 facing away from the side 3 are in contact with the outside surface 9 of the sheet 10.
  • the flexible sheet 10 which constitutes, when the opposed ends thereof are interconnected, the endless band may be, and preferably is, formed of a plurality of subsheets disposed in end-to-end relationship, the adjacent ends of adjacent sub-sheets being interconnected, for example, by a connecting member or members, according to the invention, in the manner hereinbefore described and reference-s to the flexible sheet '10 are to be construed accordingly.
  • a connecting member or members according to the invention
  • T-he reflex bend in the end portion 11 of each sheet 10 in combination with the rigid blade 15 located within the associated channel '7 prevents removal of the end portion 11 from the bar 1 in other than the longitudinal direction.
  • the removable plug pieces '12 are then inserted into the ends of the bar 1 to prevent unintentional axial movement of the bar 1 relative to the rigid blades 15.
  • a connecting member for a board for educational purposes comprising a hollow bar of trapezoidal cross-section, a longitudinally extending slot formed in one side of the bar, and longitudinally extending channels so presented within said bar adjacent to the sides of said bar on either side of said slot as to be open to the interior of said bar adjacent to the side thereof [remote from said side in which said slot is formed whereby the end portions of the sheet associated with the opposed ends thereof to be interconnected may be so located within said slot, with said ends, which present substantially rigid members, positioned within said channels, that insertion and removal of said end portions of the sheet into and from the bar, respectively, in other than the longitudinal direction are prevented.
  • a connecting member according to claim 1 in which said hollow bar of trapezoidal cross-section consists of two parallel, spaced sides one of which is of narrower width .than the other and has formed therein said longitudinally extending slot, and two further sides which interconnect the longitudinally extending edges of said two parallel, spaced sides and which are mutually divergent in the direction from that side of said two parallel, spaced sides which is of narrower width towards the other of said two parallel, spaced sides.
  • a connecting member according to claim 2 in which at least one of said further sides is embossed thereby to facilitate the use of said connecting member as a handgrip for turning the endless band when the connecting member is operatively in use.
  • a connecting member in which longitudinally extending plates, disposed parallel to and spaced from said further sides, are mounted within the bar, one longitudinally extending edge of one of said plates being attached to the longitudinally extending edge of said side in which said slot is formed, defining one edge of said slot and one longitudinally extending edge of the other plate being attached to the other longitudinally extending edge, of said side defining the other edge of said slot, each plate, together with the adjacent one of said further sides, defining one of said longitudinally extending channels which are open to the interior of said bar at the ends thereof remote from said side in which said slot is formed.
  • a connecting member according to claim 1 in which longitudinally extending flanges disposed coplanar with said side in which said slot is formed are each attached along one longitudinally extending edge thereof to one of the longitudinally extending edges of said side attached to said further sides, said flange-s being in contact with the outside surface of the endless band when the connecting member is in use.
  • a connecting member according to claim 5 formed by an extrusion process from a single strip of material, the strip of material having been longitudinally bent at the junctions of the side, disposed parallel to said side in which said slot is formed, and said further sides through an obtuse angle, at the junctions of said further sides and said flanges through the same obtuse angle, at the longitudinally extending edges of said flanges remote from said side in which said slot is formed, where the strip of material is reflexly bent, and at the junctions of said side, in which said slot is formed, and the plates through an obtuse angle.
  • a connecting member according to claim 6 in which the edges of said plates remote from said side in which said slot is formed are constituted by reflex bends formed in the edge portions of the strip of material.
  • a connecting member according to claim 5 in which the side disposed parallel to said side in which said slot is formed, said further sides and the surfaces of said flanges facing said side disposed parallel to said side in which said slot is formed have been formed of one strip of material and said plates, said side in which said slot is formed and the surfaces of said flanges facing away from said side disposed parallel to said side in which said slot is formed are formed of a second strip of material, the two surfaces of each flange having been interconnected as by spot welding or riveting.
  • a connecting member according to claim 1 in which plug pieces are provided, each plug piece comprising a shank portion and an end plate, the shank portion, when the connecting member is operatively in use, being disposed within said bar and being secured between said plates with said end plate covering the end of the connecting member thereby to prevent unintentional axial movement of said bar relative to the ends of sheet interconnected thereby.

Landscapes

  • Toys (AREA)
  • Buckles (AREA)
  • Package Frames And Binding Bands (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
US357227A 1963-04-04 1964-04-03 Connecting member for a board for educational purposes and a board incorporating such a member Expired - Lifetime US3274707A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1331263 1963-04-04

Publications (1)

Publication Number Publication Date
US3274707A true US3274707A (en) 1966-09-27

Family

ID=10020676

Family Applications (1)

Application Number Title Priority Date Filing Date
US357227A Expired - Lifetime US3274707A (en) 1963-04-04 1964-04-03 Connecting member for a board for educational purposes and a board incorporating such a member

Country Status (2)

Country Link
US (1) US3274707A (enrdf_load_stackoverflow)
GB (1) GB1053764A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945612A (en) * 1986-06-13 1990-08-07 Tamfelt Oy Ab System and a method for joining the ends of a band-shaped elongate element
US5979639A (en) * 1992-05-22 1999-11-09 Neopost B.V. Belt assembly
US20040188228A1 (en) * 2003-03-31 2004-09-30 Dow Paul W. Blade pulley
US20040231965A1 (en) * 2003-03-31 2004-11-25 Dow Paul W. Blade pulley
USD673402S1 (en) 2011-03-28 2013-01-01 Entro Inc. Panel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB908576A (en) * 1960-11-24 1962-10-17 Wilson & Garden Ltd Improvements in or relating to connecting members for boards for educational purposes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB908576A (en) * 1960-11-24 1962-10-17 Wilson & Garden Ltd Improvements in or relating to connecting members for boards for educational purposes

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945612A (en) * 1986-06-13 1990-08-07 Tamfelt Oy Ab System and a method for joining the ends of a band-shaped elongate element
US5979639A (en) * 1992-05-22 1999-11-09 Neopost B.V. Belt assembly
US6216849B1 (en) * 1992-05-22 2001-04-17 Hadewe B.V. Belt assembly
US20040188228A1 (en) * 2003-03-31 2004-09-30 Dow Paul W. Blade pulley
US20040231965A1 (en) * 2003-03-31 2004-11-25 Dow Paul W. Blade pulley
US6935488B2 (en) 2003-03-31 2005-08-30 Oxbo International Corporation Blade pulley
US7070042B2 (en) 2003-03-31 2006-07-04 Oxbo International Corporation Blade pulley
USD673402S1 (en) 2011-03-28 2013-01-01 Entro Inc. Panel
USD677501S1 (en) 2011-03-28 2013-03-12 Entro Inc. Panel
USD693594S1 (en) 2011-03-28 2013-11-19 Entro Inc. Panel

Also Published As

Publication number Publication date
GB1053764A (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
GB1080674A (en) Improvements in or relating to wallpaper removing devices
US3274707A (en) Connecting member for a board for educational purposes and a board incorporating such a member
US2368790A (en) Punch
US2098005A (en) Painting shield
US3052461A (en) Work-piece clamping means
ATA179995A (de) Vorrichtung zum biegen oder krümmen von hohlprofilleisten
GB733606A (en) Improvements in or relating to roof and wall construction
US1896923A (en) Drafting board
US2109065A (en) Drafting apparatus
GB609276A (en) Improvements in or relating to a nail receiving beam
DE564218C (de) Papierauflageblech mit Seitenkantenfuehrungen fuer das Papier
DE819372C (de) Vorrichtung zur Sicherung der Parallelfuehrung einer Reissschiene
DE569377C (de) Metallener Bauteil fuer Waende, Fussboeden, Decken oder Daecher
DE2851351C2 (de) Vorrichtung für Röntgenfilme und Verstärkerfolien
DE439823C (de) Verbindung mehrerer parallel und mit gleicher Geschwindigkeit laufender Foerderbaender durch Deckstreifen ueber den zwischen den einzelnen Baendern entstehenden Zwischenraeumen
DE618326C (de) Eckumfuehrung fuer stehend zu foerdernde Schriftstuecke
GB908576A (en) Improvements in or relating to connecting members for boards for educational purposes
US1660078A (en) Clamp for cloth
US3529391A (en) Grated opening
FR2288834A2 (fr) Panneaux autoportants pour couvertures, planchers, bardages et leur procede de mise en oeuvre
DE573214C (de) Kaminschieber
GB2018326A (en) Interlocking panels
US4006880A (en) Side board securing device
US823685A (en) Mat-cutting board.
DE377396C (de) Rasierhobel mit blattfoermiger gebogener Klinge