US2286174A - Desk telephone set - Google Patents

Desk telephone set Download PDF

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Publication number
US2286174A
US2286174A US329261A US32926140A US2286174A US 2286174 A US2286174 A US 2286174A US 329261 A US329261 A US 329261A US 32926140 A US32926140 A US 32926140A US 2286174 A US2286174 A US 2286174A
Authority
US
United States
Prior art keywords
side walls
telephone
channel
fingers
desk
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
US329261A
Other languages
English (en)
Inventor
Herbert F Obergfell
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.)
Associated Electric Laboratories Inc
Original Assignee
Associated Electric Laboratories Inc
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
Priority to BE436049D priority Critical patent/BE436049A/xx
Priority claimed from US218356A external-priority patent/US2244918A/en
Application filed by Associated Electric Laboratories Inc filed Critical Associated Electric Laboratories Inc
Priority to US329261A priority patent/US2286174A/en
Application granted granted Critical
Publication of US2286174A publication Critical patent/US2286174A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets

Definitions

  • the invention relates in general to telephone sets but more particularly'to an improved desk telephone of the cradle type.
  • An object of the invention relates to the combination of a channel provided in the cover of the desk telephone formed by the side walls and the curved rear surface and a movable fingers lifting plate mounted between the side walls within the channel.
  • Another feature of the invention relates to a pivoted fingers lifting plate for use in moving the desk telephone from place to place.
  • Fig. 1 shows a'front View of the desk-set with the calling device or dial removed.
  • Fig. 2 shows a rear View of the preferred embodiment of the invention with thepivoted'fingers lifting plate.
  • Fig. 3 shows a top view.
  • Fig. 4 shows a perspective view.
  • Fig. 5 shows a cross-section taken on-a line approximately through the'center'of the desk set.
  • Fig. 6 shows a partial crosssection through one of the side walls.
  • Figs. 7 and 8 show a top'and side'view, respectively, of the pivoted fingers lifting plate.
  • Figs. 9 to 12, inclusive show various views of the mounting block for attaching the pivotal fingers lifting plate to the cover.
  • Fig. 13 shows a modification of Fig. 4 in perspective.
  • Fig. 14 shows a perspective of a further modification.
  • Fig. 15 shows a cross-section'taken approximately through the center of Fig. 14.
  • the cover ll] of the desk telephone is formedin'one pieceof some suitable plastic insulating compound and has a general shape roughly-corresponding to a truncated pyramid thereby enabling ease in moulding.
  • the loaseportion of the cover comprises ten sides or skirts ll which extend substantially vertical for a short distance at which point the front, rear, and'side tially vertical.
  • skirt side-portion only a short distance at which point both the side surfaces extend substan-
  • the front surface I4 slopes .upwardly and inwardly'at an angle of substantially 40 degrees until it is rounded in a substantially surfaces 19 and 20 of the side walls and the curved rear .surface I6. highest points terminates in .a pair of spaced Each side wall at its pillars 2
  • a plunger 22 is movably mountedin the space between the two pillars in each side wall. These plungers are provided for operating the switchhook springs-(not shown) whenever the handset .is. removed or replaced on the-cradle.
  • a base plate 23 having a rubber ring 24 is secured to the bottom of the coverby means of screws which-screw into threaded inserts in the cover.
  • is provided in the front surface through which a calling device extends, such calling device being mounted on a bracket 26 which in turn is fastened to the top horizontal portion I5 of the cover-by means of screws and metal inserts in projections 30.
  • the bracket 26 is secured to the base portion 2'! by means of a
  • the calling device 29 is fastened to the bracket 26 by means ofmachinescrews and "does not touch the circumference of the hole 3
  • this channel is to minimize cord interference.
  • a subscriber in hurriedly replacing the handset on the cradle, may allow the cord extending from the desk stand to the handset, to loop between the plungers of the cradle.
  • these loops prevent the proper depression of the plungers since the handset rests on the cord and does not depress the plungers sufficient to properly control the substation circuit.
  • the telephone is temporarily out of service in regard to incoming calls.
  • this defect has been overcome by providing a channel which starts near the front pillars and which has sufficient depth so that the cord will not interfere with the proper operation of the plungers in case the cord is accidentally looped in between the pillars,
  • Mounting blocks 32 are provided between each pair of pillars 2
  • a hole 31 is provided in each mounting block 3?. for the plungers Due to the general shape of the cover IEI which is provided with smooth sloping sides the desk telephone is not easily moved by hand from place to place because no suitable finger grip is available for lifting the cover.
  • a fingers lifting plate which enables the fingers to be inserted below this fingers lifting plate in the channel formed by the rear surface It and the side walls I! and I8.
  • the preferred fingers lifting plate 33 is shown in Figs. 2, 3, 4, 7, and 8.
  • the lifting plate 33 has the general shape shown in Figs. 7 and 8 and has two rounded lugs 39 by means of which the plate 33 is pivoted in the cut-out rounded openings 35 in the mounting blocks 32.
  • the lower end of plate 33 is curved as shown at 4
  • the combination of the pivoted fingers lifting plate 33 and the channel has a decided advantageover known desk sets in that it allows the fingers of the hand to grasp the underside of the handset, thereby providing a firm grip on the handset. This is especially true when a lifting means is provided for moving the entire telephone set, since the lifting means as a rule allows only the finger tips to grasp the sides of the handset resulting in an insecure grip of the handset.
  • Various reports from the telephone companies show that breakage on the handsets greatly exceeds any other breakage of the desk telephones and it is thought that this new combination of the channel and pivoted finger plate will greatly reduce the breakage of handsets because of the improved finger grasping arrangement.
  • Figs. 14 and 15 show a modification comprising a movable fingers lifting rod 10.
  • the rod is U shaped and extends through holes in the rear surface and through a portion II of the moulded cover Hi.
  • the portion H being provided for guiding the movement of the rod H.
  • Screws [2, as shown in Fig. 15, are screwed into the lower ends of the rod 10 to limit the vertical movement of the rod when the same is raised for the purpose of moving the desk telephone. It should be noted that the horizontal portion of rod 10 does not rest on the rear surface l6.
  • the curvature of the rod 10 from its horizontal to its vertical shape prevents the horizontal portion of rod 10 from engaging the rear surface I 6 thereby leaving sufficient space between the rear surface l6 and the rod 10 to force the rod 10 vertically when the fingers are inserted beneath rod H1.
  • the dotted-line in Fig. 15 shows the position the rod H! attains when it is raised by the fingers for moving the desk telephone while the full-line shows the normal position of rod 10.
  • This type of finger lifting rod like the preferred embodiment shown in Fig. 4, permits a secure finger grip of the handset when the same is removed from the cradle because the rod 10 in normal position does not interfere with the finger tips grasping the underside of the handset.
  • a cover formed in one piece comprising side walls each having a pair of spaced pillars forming the hand telephone cradle supports, a rear inwardly and upwardly sloping surface between said side walls merging into a top surface, and a channel formed by said side walls and rear surface, and a fingers lifting plate pivotally mounted between said pillars and extending within said channel said plate normally resting in said channel out of the way during the removal and. replacement of the hand telephone from the cradle supports to provide a full finger grip of the hand telephone by the user and said plate manually movable within said channel thereby providing a fingers grip for moving the entire desk telephone.
  • a cover formed in one piece comprising side walls each having a pair of spaced pillars forming the hand telephone cradle supports, a rear inwardly and upwardly sloping surface between said side walls merging into a top surface, and a channel formed by said side walls and rear surface, a fingers lifting means movably mounted and. extending within said channel, and mounting blocks positioned between said paired pillars for limiting the movement of said fingers lifting means.
  • a cover formed in one piece comprising side walls each having a pair of spaced pillars forming the hand telephone cradle supports, a rear inwardly and upwardly sloping surface between said side Walls merging into a top surface, and a channel formed by said side walls and rear surface, mounting blocks positioned between said paired pillars, and a fingers lifting plate extending within said channel and pivotally mounted in said mounting blocks, said plate normally resting on said rear surface in said channel out of the way during the removal and replacement of the hand telephone from the cradle supports to provide a full finger grip of the hand telephone by the user, and said plate manually movable within said channel thereby providing a fingers grip for moving the entire desk telephone.
  • a cover formed in one piece comprising side walls each having a pair of spaced pillars forming the hand telephone cradle supports, a rear inwardly and upwardly sloping surface between said side walls merging into a top surface, and a channel formed by said side walls and rear surface, mounting blocks positioned between said paired pillars, a fingers lifting plate extending within said channel and pivotally mounted in said mounting blocks, and a flange on each mounting block for limiting the pivotal movement of said plate.
  • a cover formed in one piece comprising side walls each having a pair of spaced pillars forming the hand telephone cradle supports, a rear inwardly and upwardly sloping surface between said side walls merged into a top surface, and a channel formed by said side walls and rear surface, a fingers lifting means movably mounted and extending within said channel, said fingers lifting means normally resting in said channel out of the way during the removal and replacement of the hand telephone from the cradle supports thereby permitting a full finger grip of the undersurface of the hand telephone during such removal and replacement, said lifting means manually movable within said channel, and a cut-out provided in said lifting means for permitting a secure finger tip grip on said lifting means while the entire desk telephone is being moved.
  • a cover formed in one piece comprising side walls each having a pair of spaced pillars forming the hand telephone cradle supports, a rear inwardly and upwardly sloping surface between said side walls merging into a top surface, and a channel formed by said side walls and rear surface, a movable fingers lifting means extending within said channel, said lifting means normally resting on the rear surface in said channel thereby permitting the finger tips to grasp the undersurface of the hand telephone during its removal from said supports.
  • a cover formed in one piece comprising side walls each having a pair of spaced pillars forming the hand telephone cradle supports, a rear inwardly and upwardly sloping surface between said side Walls merging into a top surface, and a channel formed by said side walls and rear surface, a movable fingers lifting means extending within said channel, said lifting means normally resting on the rear surface in said channel thereby permitting the finger tips to grasp the undersurface of the hand telephone during its removal from said supports, and a curved rear end on said lifting means extending upwardly over and within said channel thereby permitting insertion of the finger tips between said lifting means and said rear surface.
  • a cover comprising side walls each having a pair of spaced pillars forming the hand telephone supports, a rear inwardly and upwardly sloping surface between said side Walls merging into a top surface, and a channel formed by said side walls and rear surface, and a movable fingers lifting means normally out of way of the fingers during removal of the hand telephone from said supports and movably positioned by the fingers for use in moving the entire desk telephone.
  • a cover comprising side walls each having a pair of spaced pillars forming the hand telephone supports, a rear inwardly and gradually upwardly sloping surface between said side walls merging into a top surface, and a channel formed by said side walls and said rear surface, and a U-shaped rod movably mounted in said channel thereby providing a finger lifting grip for moving the desk telephone.
  • a cover comprising side walls each having a pair of spaced pillars forming the hand telephone supports, a rear inwardly and gradually upwardly sloping surface between said side walls merging into a top surface, and a channel formed by said side walls and said rear surface, a U-shaped rod movably mounted in said channel thereby providing a finger lifting grip for moving the desk telephone, and means inside said cover for limiting the movement of said U-shaped rod.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
US329261A 1938-07-09 1940-04-12 Desk telephone set Expired - Lifetime US2286174A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE436049D BE436049A (enrdf_load_stackoverflow) 1938-07-09
US329261A US2286174A (en) 1938-07-09 1940-04-12 Desk telephone set

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US218356A US2244918A (en) 1938-07-09 1938-07-09 Desk telephone set
US329261A US2286174A (en) 1938-07-09 1940-04-12 Desk telephone set

Publications (1)

Publication Number Publication Date
US2286174A true US2286174A (en) 1942-06-09

Family

ID=26912828

Family Applications (1)

Application Number Title Priority Date Filing Date
US329261A Expired - Lifetime US2286174A (en) 1938-07-09 1940-04-12 Desk telephone set

Country Status (2)

Country Link
US (1) US2286174A (enrdf_load_stackoverflow)
BE (1) BE436049A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE436049A (enrdf_load_stackoverflow)

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