US1722905A - Driving mechanism for sectional machines - Google Patents

Driving mechanism for sectional machines Download PDF

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Publication number
US1722905A
US1722905A US279311A US27931128A US1722905A US 1722905 A US1722905 A US 1722905A US 279311 A US279311 A US 279311A US 27931128 A US27931128 A US 27931128A US 1722905 A US1722905 A US 1722905A
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US
United States
Prior art keywords
speed
shaft
wire
felt
pump
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
US279311A
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English (en)
Inventor
Daniel R Francis
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.)
WATERBURY TOOL CO
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WATERBURY TOOL CO
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 WATERBURY TOOL CO filed Critical WATERBURY TOOL CO
Priority to US279311A priority Critical patent/US1722905A/en
Priority to FR674481D priority patent/FR674481A/fr
Priority to DEW82698D priority patent/DE514696C/de
Application granted granted Critical
Publication of US1722905A publication Critical patent/US1722905A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/02—Mechanical driving arrangements

Definitions

  • DANIEL R. FRANCIS OF WATERB'URY, CONNECTICUT, ASSIGNOR TO THE WATERBURY TOOL COMPANY, OF WATERBURY, CONNECTICUT, A CORPORATION OF CONNECTICUT.
  • This invention relates to driving means for sectional machines of the type wherein it is necessary to maintain absolute synchronism between two adjacent machine sections.
  • the material is transferred from one section to the next adjacent one and in order that such transfer be made without damage to the material it is necessary that the speeds of travel of these two adjacent sections be adjusted to secure absolute" synchronism.
  • An example of such a machine is the paper making machine known as the Harper Fourdrinier in which the paper pulp is laid upon the top of a traveling wire mesh belt-called the wire, from which it is transferred to a traveling felt belt or conveyer called the felt. The transfer.
  • the couch press a pair of pressure rollers called the couch press.
  • the wire is trained about and is driven by the lower of the couch press rolls while the upper of said rolls is an idler roll and is driven by the felt which is trained about said idler roll.
  • the felt picks off the partially pressed pulp from the wire at the couch ress and carries it to the first pair of pressing rolls of the paper machine proper, the felt is trained about and is driven by the lower of the last named press rolls.
  • the couch press and paper press rolls are separately driven and while the wire and felt are driven respectively by the.
  • the principal object of the present invention is to provide a new and improved construction for automatically controlling the linear speeds of the wire and felt to maintaln them in absolute synchronism.
  • Fig. 1 is a dlagrammatic side elevation of the wire and felt sections of a Harper-Fourdrinier paper machine showing by way of example an application of the principles of my invention to this type of machine;
  • Fig. 2 is a plan View of the structure shown in Fig. 1
  • Fig. 3 is a detail partly in section and partly in side elevation of the control mechanism for one of the drivingunits.
  • the numeral 10 indicates the wire mesh conveyor belt of the paper machine which at one end is trained about and driven by the lOWer couch roll 11. At the other end the wire is trained about an idler roll 12. Extending above the wire is the felt 13 which, in accordance with the usual construction of machines of this type, is in'the form of an endless conveyor, one end of vwhich is trained about and is driven by the lower press roll 14. The otherv end of the felt is trained about the upper couch roll 15 and is pressed into contact with the paper pulp upon the wire by such roll 15, as clearly shown in Fig. 1 of the drawings. Between the rolls l and 15 the upper and lower reaches of the felt pass over the guide rolls 16 and 17..
  • the first press roll 1% is driven by any suitable driving means, not shown, and the rotation of this roll is used for driving the pump or A-end, designated by the reference character A, of a hydraulic speed gear of the type known as the Waterbury gear. Fluid from the A-end of the gear is circulated under pressure to the hydraulic motor B of such speed gear. The latter is employed for driving the couch roll 11.
  • the main shaft 18 of the pump or A-end of the speed gear is driven from the first press roll 14 by means of a belt 19 trained about driving pulleys and 21, the pulley 20 being secured upon an extension shaft 22 secured by the flexible coupling 23 to the shaft of the press roll 14 and the pulley 21 being secured to the driving shaft 18 of the pump.
  • the shafts 22 and 18 are mountedin suitable bearings 24, 25 respectively.
  • the driving shaft 26 of the B-end has secured to it a driving pulley 27 which drives a belt 28 trained about said pulley and a second pulley 29 secured to a shaft. 30.
  • the shaft 30 is mounted in bearings 31 and carries at one end a gear 32 which meshes with a gear 33 secured to the outer project-- ing end of the couch roll 11.
  • Hydraulic speed gears of the ⁇ Vaterbury type are well known in the arts and the constructional details of such-gears form no part of the present invention. It will therefore be sllflicicnt for the purposes of the present application to but briefly describe their construction. It will be sufficient to state that both pump and motor are of similar construction and each comprise a rotatable barrel 35 (see Fig. provided with a plurality of cylinders 36 extending parallel to the driving shaft of the respective unit-Q Each cylinder 36 has slidably mounted therein a piston 37, the latter being connected by its piston rod 38 with a swash plate 39 mounted for rotation in a tilting box 40. 'ith the tilting box 40 and swash plate 39 inclined, as shown in Fig.
  • rotation of the barrel produces a reciprocation of the pistons 37 in the cylinders 36 and causes fluid under pressure to be delivered, for example, through the pipe 41 to the motor B, the fluid passing through said motor and causing its cylinder barrel to be rotated, after which the fluid is returned through the pipe 42 back to the pump A.
  • the position of the tilting box 40 of the pump or A-end is made adjustable while the tilting box of the motor is preferably held at a fixed inclination.
  • the adjustment of the tilting box of the A-end is effected by means of a control shaft 43 which passes into the pump casing and is suitably connected with the tilting box 40.
  • control shaft 43 moves to vary the inclination of the tilting box and therefore the output of the pump.
  • the upper end of the control shaft 43 has connected thereto, by means of a coupling 44, a threaded shaft 45.
  • the threaded portion 46, of the shaft 45 engages within the nut 47 held against longitudinal -movement in a bracket 48, extending upwardly from the casing of the pump.
  • the nut 47 has secured thereto a Worm Wheel 49 withwhich meshes a Worm 50.
  • the Worm 50 issecured adjacent to one end of a shaft 51, to the other end of which is fastened a sprocket wheel 52.
  • the sprocket Wheel 52 is driven from the roller 12, at one end of the wire 10 by means of a sprocket wheel 53 secured to an extension of the shaft of the roller 12, a sprocket chain 54 connecting the sprockets 52 and 53.
  • the threaded shaft has its lower end connected for rotation butheld against longitudinal movement relatively to the coupling 44 and the upper end of said shaft eured adjacent to one end of the shaft 58.
  • a sprocket wheel 59 driven by a chain (30 trained about a sprocket Wheel 61 secured to the outer projecting end of the guide roller 17.
  • the roller 12 is in contacting engagement with the Wire and as it is an idler roll, it will have imparted to it, a linear speed equal to that of the linear speed of the wire.
  • the speed of the roll 12 is communicated through the sprockets 52, 53 and chain 54 to the shaft 51, thus causing the shaft 51. and its worm gear to be rotated at a speed proportional to that of the speed of rotation ofthe roller 12.
  • the guide roller 17 is in contact with the felt l3 and that its rotation is communicated through the sprockets 59, 61 and belt (30, to the shaft 58.
  • the Worm 57, upon shaft 58 will therefore be rotated a speed proportional to the speed of rotation of the roller 17.
  • the worm wheels 49 and 56 will. again rotate at the same speed and the control shaft 43 will be held in adjusted position. If for any cause the linear speed of the felt should increase over the linear speed of the wire, the worm wheel 56 will then start torotate faster than the worm wheel 49, thus producing a longitudinal movement of the control shaft 43 in a direction opposite to that above described so as to increase the output of the pump and thereby increase the speed of rotation of the roll 11 and the linear speed of the wire 10.
  • each of the controlling members above referred to is driven by a roller, the roller for one controlling member being directly in contact with, and driven by, its engagement with one of the If from any cause whatsoever theconstructional example selected for illustration, produces a change of speed in but one of the machines sections.
  • a hydraulic speed .gear in connection with a controlling device of the character illustrated, possesses marked advantages; first, because it is possible with a hydraulic speed gear to obtain practically infinite speed variations ranging from Zero to the maximum speed for which the gear is designed; second, the hydraulic speed gear is instantly responsive to changes in the adjustment of the control shaft; third, the speed changes are secured gradually without shock or jerk; fourth, the speed gear delivers its full torque at its lowest, as well as the highest speeds; fifth, relatively large speed changes are obtainable by comparatively small amounts of movement of the control shaft 43; and sixth, the power required for moving the control shaft is not very great.
  • An apparatus comprising a pair of adjacent machines or sections of amachine, operating successively to treat material fed therethrough and having independent driving means, characterized by one of said driving means consisting of a hydraulic speed gear comprisinga fluid pressure pump and a fluid pressure motor, said pump having an adjustable control shaft for varying its output, a pair of rotating members, one in contacting engagement with a movable part of one machine or section and the other in contacting engagement with a movable part of the other machine, and operative connections between said members and said control shaft.
  • driving means consisting of a hydraulic speed gear comprisinga fluid pressure pump and a fluid pressure motor, said pump having an adjustable control shaft for varying its output, a pair of rotating members, one in contacting engagement with a movable part of one machine or section and the other in contacting engagement with a movable part of the other machine, and operative connections between said members and said control shaft.
  • An apparatus comprising a pair of adjacent machines or sections of a machine
  • a hydraulic speed gear comprising a fluid pressure pump driven from one of said sections, and a fluid pressure motor to which fluid from said pump is circulated, said pump being provided with an adjustable control shaft and a rotatable nut having ascrew threaded connection with said shaft, and a pair of rotating members, one in contacting engagement with a movable part of one of machine or section, and the other in contacting engagement with the other machine or section, and connections between said rotating members and said shaft and nut.
  • a hydraulic speed gear comprising a pump and a motor, said pump being driven from one of said units and said motor driving the other of said units, said pump being provided with a controlling device for varying its output and thereby the speed of said motor, and means for automatically regulating the speed of said motor and the unit driven thereby comprising a pair of rotating members, one driven by, and proportionately to the speed of, said one unit and the other driven by, and proportionately to the speed of, said other unit, and driving connections between said members and said controlling device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
US279311A 1928-05-21 1928-05-21 Driving mechanism for sectional machines Expired - Lifetime US1722905A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US279311A US1722905A (en) 1928-05-21 1928-05-21 Driving mechanism for sectional machines
FR674481D FR674481A (fr) 1928-05-21 1929-05-02 Dispositif pour la commande synchrone de machines ou sections de machines
DEW82698D DE514696C (de) 1928-05-21 1929-05-19 Einrichtung zum Ausgleich der Arbeitsgeschwindigkeiten, z.B. von Foerderbaendern vonPapiermaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US279311A US1722905A (en) 1928-05-21 1928-05-21 Driving mechanism for sectional machines

Publications (1)

Publication Number Publication Date
US1722905A true US1722905A (en) 1929-07-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
US279311A Expired - Lifetime US1722905A (en) 1928-05-21 1928-05-21 Driving mechanism for sectional machines

Country Status (3)

Country Link
US (1) US1722905A (de)
DE (1) DE514696C (de)
FR (1) FR674481A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI870161A (fi) * 1987-01-15 1988-07-16 Neste Oy Modifierad polyolefin.
DE8700994U1 (de) * 1987-01-22 1987-03-05 J.M. Voith Gmbh, 7920 Heidenheim Antrieb einer Filzleitwalze

Also Published As

Publication number Publication date
DE514696C (de) 1930-12-15
FR674481A (fr) 1930-01-29

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