GB210162A - An improved calculator for power transmission belting - Google Patents

An improved calculator for power transmission belting

Info

Publication number
GB210162A
GB210162A GB2917822A GB2917822A GB210162A GB 210162 A GB210162 A GB 210162A GB 2917822 A GB2917822 A GB 2917822A GB 2917822 A GB2917822 A GB 2917822A GB 210162 A GB210162 A GB 210162A
Authority
GB
United Kingdom
Prior art keywords
belt
belting
terms
slide
graduated
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
Application number
GB2917822A
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.)
John Tullis & Son Ltd
Original Assignee
John Tullis & Son 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 John Tullis & Son Ltd filed Critical John Tullis & Son Ltd
Priority to GB2917822A priority Critical patent/GB210162A/en
Publication of GB210162A publication Critical patent/GB210162A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices
    • G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
    • G06G1/10—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation
    • G06G1/12—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation logarithmic graduations, e.g. for multiplication

Abstract

210,162. Tullis & Son, Ltd., J., and Tullis, H. P. Oct. 26, 1922. Slide rules for powertransmission belting comprise a straight or circular body or stock and a slide or disc having logarithmic scales graduated respectively in terms of linear belt speed, horse power transmitted, and width of belting The rule is marked for belting of various kinds and plies so that the corresponding widths of all of these can be found simultaneously. The reverse side may be provided with scales graduated in terms of pulley diameter, belt speed, and revolutions per unit of time. The body or stock A is formed with a longitudial slot in which the slide B moves. Scales a, b on the body are graduated respectively in terms of belt speed in feet per minute and width of belt in inches. A scale c on the upper edge of the slide is graduated in terms of horse power transmitted, and on the lower edge are indices for different kinds and plies of belting. The scales are based on the fact that, within limits, the horse power transmitted by leather or balata belting varies directly as the speed and width of the belt, it being taken as a standard that a single leather belt one inch wide travelling at 1000 feet per minute with a minimum arc of contact with the pulleys of 180‹ will transmit 1.5 h.p., a double belt 2.4 h.p., and a balata belt of three, four, five, six, seven, eight, nine, and ten plies 1.21 h.p., 1.81 h.p., 2.42 h.p., 3.03 h.p., 3.63 h.p., 4.24 h.p., 4.84 h.p., and 5.44 h.p. respectively. When the horse power to be transmitted is set opposite the belt speed, the widths for the different kinds of belting will be opposite the corresponding indices. For the purpose of solving the equation : Belt speed = A x diameter of pulley x revolutions per unit of time, the reverse side of the body A is graduated in terms of belt speed in feet per minute and pulley diameter in inches, and the reverse side of the slide B in terms of revolutions per minute. Specification 6680/91 is referred to.
GB2917822A 1922-10-26 1922-10-26 An improved calculator for power transmission belting Expired GB210162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2917822A GB210162A (en) 1922-10-26 1922-10-26 An improved calculator for power transmission belting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2917822A GB210162A (en) 1922-10-26 1922-10-26 An improved calculator for power transmission belting

Publications (1)

Publication Number Publication Date
GB210162A true GB210162A (en) 1924-01-28

Family

ID=10287373

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2917822A Expired GB210162A (en) 1922-10-26 1922-10-26 An improved calculator for power transmission belting

Country Status (1)

Country Link
GB (1) GB210162A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452417A (en) * 1946-12-13 1948-10-26 Libbey Owens Ford Glass Co Method and apparatus for use in designing solar houses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452417A (en) * 1946-12-13 1948-10-26 Libbey Owens Ford Glass Co Method and apparatus for use in designing solar houses

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