US1005565A - Printing-machine. - Google Patents

Printing-machine. Download PDF

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US1005565A
US1005565A US24385505A US1905243855A US1005565A US 1005565 A US1005565 A US 1005565A US 24385505 A US24385505 A US 24385505A US 1905243855 A US1905243855 A US 1905243855A US 1005565 A US1005565 A US 1005565A
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machine
printing
plate
handle
martin
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US24385505A
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George L Martin
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BUNDY Manufacturing Co
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BUNDY Manufacturing Co
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C7/00—Input mechanisms
    • G06C7/10—Transfer mechanisms, e.g. transfer of a figure from a ten-key keyboard into the pin carriage

Definitions

  • WIT-N ESSES INVENTOR @www KW ATTORNEYS G. L. MARTIN.
  • WITNEssEs RJ INVENTUR 4MM l @m75 0C. H11/RU G. L. MARTIN.
  • My invention relates to printing machines and to machines for bringing suitable characters upon a printing or reading line.
  • Figure l is a side view of such machine; Fig. 2 a plan; Fig. 3 a plan of the interior with' the top plate and the keyboard sections removed; Fig. 4 a vertical longitudinal section on the lines 4 4 of Fig. 3; Fig. 5 a similar section on the lines 5-5 of Fig. 3; Fig. 6 is a central longitudinal section on the lines 6--6l of Fig. 3; Fig. 7 a longitudinal section on the lines 7-7 of Fig. 3; Fig. 8 is a side elevation of the mechanism looking in the same direction as in Fig. 7 taken on lines 8-8 of Fig. 3; Fig.
  • FIG. 9 is a rear view of a portion of theeinside of the machine showing a rear view of the carriage;
  • Fig. 10 is a detail connected with the vhammer trip mechanism of the name wheel;
  • Fig. 1l is across-section of the machine showing a front view of the individual type segments and their connec-- tions and also showin a front view of the carriage taken on the lines 11-11 of Fig. 6;
  • Figs. 12 and 13 are detail views of' the name wheel and its plate;
  • Fig. 14 is a vertical cross-section on the lines 14-14 of Fig. 6 giving a section of the individual type segments and their mountings, and an elevation of the main cam shaft of the machine with its cams and levers;
  • Fig. 14 is a vertical cross-section on the lines 14-14 of Fig. 6 giving a section of the individual type segments and their mountings, and an elevation of the main cam shaft of the machine with its cams and levers;
  • Fig. 15 is a detail front view of the adding wheels and the total type wheels, the latter being in section;
  • Fig. 1.6 is a horizontal section of the carriage taken just above the hammers showing the carriage removed from the machine but mounted upon a portion of the slide rods;
  • Fig. 17 is a rear View of the cross-over rods and connections;
  • Fig. 18 is a side elevation of one of the key section units or series of keys;
  • Fig. 19 is a cross-section on the lines 19-19 of Fig. 18;
  • Fig. 20 is ahorizontal section of the key ⁇ mechanism taken on the lines 20-20 of Fig. 18, intended merely to show h'ow the Shanks of the keys are4 held by the retaining bar;
  • Fig. 21 is a perspective view of an individual type segment;
  • Fig. 1.6 is a horizontal section of the carriage taken just above the hammers showing the carriage removed from the machine but mounted upon a portion of the slide rods;
  • Fig. 17 is a
  • Fig. 22 is a horizontal section on the lines 22-22 of Fig. 6 showing a part of the carrying mechanism;
  • Fig. 23 is a front view of the front inking ribbon mechanism;
  • Fig. 24 is a side view of the same;
  • Figs. 25-28 are detail views of the counter, Fig. 25 being a bottom View partially in section, Fig. 26 a cross-section on the lines 26-26 of Fig. 25;
  • Fig. 29 is a diagrammatic or skeleton view showing the position of one series of devices in the position they assume when the 8 key has been depressed and the machine operated by means of its main handle;
  • Fig. 30 is a detail showing the action of one of the hammers;
  • Fig. 30 is a detail showing the action of one of the hammers;
  • FIG. 31 is an opposite view of the rea-r of the machine showing t-he mounting fora paper roll;
  • Fig. 32 is a top view of said roll and its mounting removed from the machine;
  • Fig. 33 is a view of a slip which has been printed .on the machine;
  • Fig. 34 is a View of the duplex paper preferably used in connection with the machine;
  • Figs. 35 and 36 are details of the clearing signal and its operative parts;
  • Figs. 37 and 38 and 39 are details of the carrying mechanism showingsuccessive positions of the parts in the operation of the machine;
  • Fig. 40 is a rear View of the same;
  • Fig. 41 is a detail of the hammer trip of the name plate.
  • the operator first depresses such of the keys as represent the number he wishes to print or add upon the machine.
  • the keys h depressed are locked in their down position and the ope ation of any key of a series locks in thei up position all the other keys of the same series preventing the depression of more than one key in the same series. He then pulls forward handle 2 secured to a reciprocating rod 3 as far as it will come and thenpushes, it backward or permits it to return to its backward or normal position.
  • handle 2 also causes such of the hammers 6 as are tripped in a manner to be hereinafter described, to print the numbers set upon the printing line upon any suitable record strip, such asy the strip of paper 11.
  • the operation of thehandle 2 also returns all of the parts to their original or normal positions. -The operation of the .handle also feeds the paper strip and an inking ribbon. The result of the operation is to print upon the strip the number represented by the keys depressed and to add the same number upon the total adding wheels.
  • the driving meckam'smf-This is more particularly illustrated in Figs. 1 to 8 inclusive.
  • I provide a driving member adapted to rotate in one direction only which, as shown, is the main driving shaft 14, a reciprocating member for imparting'motion to the driving member, as shown, a rock shaft 15, to which a reciprocating handle 2 is secured and I provide connections between the two shafts for transferring the rocking movement of one into the continuous rotation of the other. These connections are so arranged and adapted that the movement of the handle 2 in one direction will cause the main driving shaft 14 to be rotated a different amount from that imparted to it by the movement of said handle in the opposite direction.
  • Slide plate 18 is capable of a sliding movement on plate 17.
  • This sliding plate is provided with two reversely acting sets of gearing 21 and 22. These sets of gearing are arranged at different radial distances from the center of the rock shaft 15 and when operative are concentric therewith, one gearing 21 facing outward from the center, the other facing inward. These gears 21 and 22 are so arranged that if the sliding plate is in its outward radial position gear 21 will mesh with a gear wheel 23 and gear 22 will be out of mesh, while if the sliding plate is in its inward radial position gear 22 will mesh with the opposite side of gear wheel 23 and gear 21 will be out of mesh.
  • Means are provided for throwing one of these sets of gears into mesh with gear wheel 23 when the rock shaft rotates one way and the other into mesh when it rotates the other way.
  • sliding plate 18 there is a cam slot 24 in which works roller 25 attached to plate 16.
  • Theupper part of plate 16 has a tooth 26.
  • Mounted on plate 17 is a pawl 27 which has an extension 28 at the right and an eX- ⁇ tension 29 at the left.
  • the cam surfaces on these extensions' are adapted in the different positions of the parts to strike pins -30 mounted onthe side frame of the machine.
  • Mounted 'on plate 17 are two pins 31, 31 and coacting with these pins but mounted on the side frame are two pawls 32, 32 which are spring 33, 33.
  • Pawl 27 has a pin 34 co-acting with pin 26 of plate 16.
  • roller 25 will have reached the forward end of slot 24.
  • In this position of the parts roller 25 in slot 24 on one side' of pins 26 and 34 will rigidly and positively lock plates 16 and 17 so that forward movement of plate 16 will cause the movement of plate 17 and its connections the same as if the parts formed one rigid structure.
  • This rigidity is essential for they accurate and reliable working of the machine.
  • Further forward movement of the handle will cause gear wheel 23 to rotatein the direction of the arrow which will rotate gear 35 in the direction of its arrow, rotating main driving shaft 14 in the same direction. 1When handle 2 has reached its forward position pin 31 locks into pawl 32, the end 29 of pawl 27 rides up against pin 30 and frees plate 16 from plate 17 preparing the parts for the return movement.
  • roller 25 moves to the opposite or rear end of slot'24 throwing gear 22 out of mesh with gear wheel 23 and gear 21,into mesh and freeing pin 31 from pawl 32v permitting the return of -plate 17 and its connections, while the movement of' the parts to the rear frees extension 29 from pin 39 and permits pin 34 to drop down- 26 has moved to the actuated and have limiting stop pins Awork to be ldone by a person rear of pin 34 and the latter drops down in front of pin 36.
  • VPlates 16 and 17 are again rigidly locked together by means of roller 25 and slot 24 and pins 26 and 34, and plate 17is carried backward by the movement of plate 16.
  • Attached to plate 16 is a spring 36 .anchored to the vside frame ofthe machine.
  • this spring is to return the parts to their original or normal positions in case the operator lets go ofthe handle while on its return or does not push it Jback far enough.
  • Spring 36 is so proportloned that it will bring the parts back to their original position in such a case.
  • pawl 32 again locks with pin 31 locking plate 17 and its connections in their original 4positions and extension 28,011 pawl 27 contacts with pin 30 lifting tooth -34 out of engagement with tooth 36 preparing the parts for the next operation ofthe machine.
  • the reversely acting gears facing in opposite directions and operating upon different sides of the gear wheel 23 when successively in engagement with it, rotate that gear and with it the main driving shaft always in the same direction.
  • gears 21' and 22 atdi'i'erent distances from the center of the rockshaft enables the main driving shaft to be rotated a greater distance when the handle 2 is moved infone directionthan in 'the other.
  • these parts are so proportioned that on the forwardl or initial movement of handle 2 shaft 14 isrotatedtwo-thirds of a complete revolution and one-third of a revolution on the return of handle 2 to its original position.
  • One advantage of this ,arrangement is that practicallythe entire work performed by the machine is accomplished by the forwardl pull'of the handle .2. In the machine shown no work is performed on the return of ⁇ the handle except to return to their original positions a few of the parts of the machine.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)

Description

G. 1.. MARTIN. PRINTING MACHINE. APPLICATION FILED 1EvB.2, 1905.
Patented om.. 1o, 1911.
17 SHEETS-SHEET l.
1 O Q O .0900 13.3.... .....Z 2.....,
WITNESSES:
' G. L. MARTIN.
PRINTING MACHINE.
APPLIOATION FILED F1332, 1905.
Patented 001;. 1(5), 1911.
17 SHEETS-SHEET 2.
WITNES'ES:
G. L. MARTIN, PRINTING IMIACHINL.4
APPLIOATION FILED TELE2, 1905.
1,005,565, Patented Oct. 10, 1911.
17 SHEETS-SHEET s.
WIT-N ESSES: INVENTOR @www KW ATTORNEYS G. L. MARTIN.
PRINTING MACHINE.
APPLICATION FILED mlm, 1905.
Patented Oct. 10, 1 911.
17 SHEETS-SHEET 4.
WITNESSES! G. L. MARTIN.
PRINTING MACHINE.
ATTORNEYS WITNESSES:
/M ww/f G. L. MARTIN.
PRINTING MACHINE.
INVENTOR MMX/@7M ATTORNEYS G. L. MARTIN.
PRINTING MACHINE. APPLICATION FILED Hmz, 1905.
17 SHEETS*SHEET 7.
Mum..
ATTORNEYS G. L. MARTIN.
PRINTING MACHINE.
APPLICATION FILED P51372, 1905.
Patented Oct. 10, 1911.
17 SHEETS-SHEET 8.
WITNESSES:
G. L. MARTIN. PRINTING MACHINE. APPLICATION FILED FEB.2, 1905.
Patented Oct. 10, 1911.
17 SHEETS-SHEET 9. *l
y @qw/IMM -VI fl QQ NNN @.QM. .W Qf .1 Qbl m I. y. Sm .QN .Em 1 I ATTORNEYS G. L. MARTIN.
PRINTING MACHINE.
APPLICATION FILED FEB.2, 1905.
17 SHEETS-SHEBT10.
www NNN WITNESSES: INVENTOR ATTORNEYS G. L. MARTIN.
PRINTING MACHINE.
APPLICATION FILED PEB.2,1905.
' 1,005,565, Patented Oct. 10,1911.
17 SHEETS-SHEBT 11.
/l ma' nl l I ll l WITNESSES: l INVENTOR LQ Maand@ BY fg s y KMTWwKf/Lw ATTORNEYS G. L. MARTIN.. PRINTING MACHINE.
APPLIGATION FILED FEB.2, 1905. 1,005,565. Patented o@n.10,1911.
17 SHEETS-SHEET 12.
WITNEssEs: RJ INVENTUR 4MM l @m75 0C. H11/RU G. L. MARTIN.
PRINTING MACHINE.
APPLICATION FILED mlm, 1905.
Patented 0011.1(),1'911 17 SHEETS-SHEET 13.
' WIINESSES:
G. L. MARTIN.
PRINTING MACHINE.
APPLICATION FILED mlm, 1905.
NAS.
NNN
WITNESSES:
G. L. MARTIN. PRINTING'MACHINE. APPLICATION FILED Hmz, 1905.
Patented Oct. 10, 1911.
17 SHEETS-SHEET 15.
.wk 1Q G. L. MARTIN.
PRINTING MACHINE.
APPLICATION FILED FBB.2,1905.
Patented Oct. 10, 1911.
17 SHEETS-SHEET 16.
w z mboz www5/(mgm ATTORNEYS G. L. MARTIN.
PRINTINGMAGHINE.
APPLICATION FILED mlm, 1905.
Patented Oct. 10, 1911.
17 SHEETS-SHEET 17.
WITNESSES:
/Zgw (Q ATTORN UNITED sTATEs PATENT oEEroE.
GEORGE L. MARTIN, OF BINGHAMTON, NEW YORK, ASSIG-NOR TO BUNDY MANUFAC- TURING COMPANY, A CORPORATION OF'NEW YORK. I
PRINTING-MACHINE.
Specification of Letters Patent.
Patented Oct. 10, 1911.
Application led IFebruary 2, 1905. SperialvNo. 243,855.
- citizen of the United States, and a resident of Binghamton, county of Broome, State of New York, have invented new and useful Improvements in Printing- Machines, of which the following is a specification.`
My invention relates to printing machines and to machines for bringing suitable characters upon a printing or reading line.
It has for its object to improve and simpliy the mechanism of suchmachines; to
render the parts easier of action andadjustment; to improve the hammer operating mechanism; to provide means for varying thepressure of the printing blow under varying circumstances; to provide animproved movable .printing carriage and means for protecting certain of the printing parts and their connections, especially-certain parts of the mechanism for operating the hammers; also improved means for operating a name wheel and for making it stand during the opera-tion of the machine at the ditto point unless positively moved otherwise; also means for varying the pressure of the printing blow in connection with the action of the ditto marks; also to provide a clearing signal; also to provide a counter for keeping a record of the number of operations of the machine; also for improving and simplifying the keyboard and its connections and the means for enabling the keys to set the type segments in printing or reading position.
In the drawings accompanying this specication and forming part hereof I have shown one form or embodimentpof my invention which I will now proceed tode scribe. My invention as there shown is embodied in a machine provided with a bank of keys of the usual character and arranged to bring upon a printing line numbers corresponding to the value of the keys depressed and to print the said numbers upon a suitable record strip, and also to add such numbers upon a set of adding wheels, and, when desired, to print the total represented by such adding wheels.
Referring now to the drawings of such form of machine, Figure l is a side view of such machine; Fig. 2 a plan; Fig. 3 a plan of the interior with' the top plate and the keyboard sections removed; Fig. 4 a vertical longitudinal section on the lines 4 4 of Fig. 3; Fig. 5 a similar section on the lines 5-5 of Fig. 3; Fig. 6 is a central longitudinal section on the lines 6--6l of Fig. 3; Fig. 7 a longitudinal section on the lines 7-7 of Fig. 3; Fig. 8 is a side elevation of the mechanism looking in the same direction as in Fig. 7 taken on lines 8-8 of Fig. 3; Fig. 9 is a rear view of a portion of theeinside of the machine showing a rear view of the carriage; Fig. 10 is a detail connected with the vhammer trip mechanism of the name wheel; Fig. 1l is across-section of the machine showing a front view of the individual type segments and their connec-- tions and also showin a front view of the carriage taken on the lines 11-11 of Fig. 6; Figs. 12 and 13 are detail views of' the name wheel and its plate; Fig. 14: is a vertical cross-section on the lines 14-14 of Fig. 6 giving a section of the individual type segments and their mountings, and an elevation of the main cam shaft of the machine with its cams and levers; Fig. 15 is a detail front view of the adding wheels and the total type wheels, the latter being in section; Fig. 1.6 is a horizontal section of the carriage taken just above the hammers showing the carriage removed from the machine but mounted upon a portion of the slide rods; Fig. 17 is a rear View of the cross-over rods and connections; Fig. 18 is a side elevation of one of the key section units or series of keys; Fig. 19 is a cross-section on the lines 19-19 of Fig. 18; Fig. 20 is ahorizontal section of the key` mechanism taken on the lines 20-20 of Fig. 18, intended merely to show h'ow the Shanks of the keys are4 held by the retaining bar; Fig. 21 is a perspective view of an individual type segment; Fig. 22 is a horizontal section on the lines 22-22 of Fig. 6 showing a part of the carrying mechanism; Fig. 23 is a front view of the front inking ribbon mechanism; Fig. 24 is a side view of the same; Figs. 25-28 are detail views of the counter, Fig. 25 being a bottom View partially in section, Fig. 26 a cross-section on the lines 26-26 of Fig. 25; Fig. 29 is a diagrammatic or skeleton view showing the position of one series of devices in the position they assume when the 8 key has been depressed and the machine operated by means of its main handle; Fig. 30 is a detail showing the action of one of the hammers; Fig. 31 is an opposite view of the rea-r of the machine showing t-he mounting fora paper roll; Fig. 32 is a top view of said roll and its mounting removed from the machine; Fig. 33 is a view of a slip which has been printed .on the machine; Fig. 34 is a View of the duplex paper preferably used in connection with the machine; Figs. 35 and 36 are details of the clearing signal and its operative parts; Figs. 37 and 38 and 39 are details of the carrying mechanism showingsuccessive positions of the parts in the operation of the machine; Fig. 40 is a rear View of the same; Fig. 41 is a detail of the hammer trip of the name plate.
Before proceeding to describe in detail the various parts of the machinefI will briefly state how the machine is operated.
The operator first depresses such of the keys as represent the number he wishes to print or add upon the machine. The keys h depressed are locked in their down position and the ope ation of any key of a series locks in thei up position all the other keys of the same series preventing the depression of more than one key in the same series. He then pulls forward handle 2 secured to a reciprocating rod 3 as far as it will come and thenpushes, it backward or permits it to return to its backward or normal position. This moves such of the type segments 4 as correspond to the series of keys, in which keys have'been depressed, a distance corresponding to the value of the respective keys that have been depressed bringing the one'of a series of type 5 carried by the type segment, corresponding to the value of the corresponding key depressed, upon the printing line underneath one of a series of hammers 6, and also adding the same number upon a series of total adding wheels 7 by means of a gear 8, mounted on the type segment 4 and through an intermediate series of adding wheels 9, meshing with gears 10 secured to total adding wheels 7. The' movement of handle 2 .also causes such of the hammers 6 as are tripped in a manner to be hereinafter described, to print the numbers set upon the printing line upon any suitable record strip, such asy the strip of paper 11. The operation of thehandle 2 also returns all of the parts to their original or normal positions. -The operation of the .handle also feeds the paper strip and an inking ribbon. The result of the operation is to print upon the strip the number represented by the keys depressed and to add the same number upon the total adding wheels. If the operator desires to print a total at any time he pushes the carriage 12, which contains the hammers and some other parts of the printing mechanism, backward ,along the top of the machine until the hammers 6 are over the to of the total adding wheels 7 This operation effects the printing of the total upon the paper strip leaving a space between the total and the items of the account above it as shown in Fig. 33. @n the return of the carriage to its forward position the paper is fed to leave a space between said tot-al and the items ofthe next account. The operator can at any time by moving a reset handle 13 reset the adding wheels at zero.
I will nowproceed to describe in detail the different parts of the'machine.
The driving meckam'smf-This is more particularly illustrated in Figs. 1 to 8 inclusive. In the driving mechanism of my machine I provide a driving member adapted to rotate in one direction only which, as shown, is the main driving shaft 14, a reciprocating member for imparting'motion to the driving member, as shown, a rock shaft 15, to which a reciprocating handle 2 is secured and I provide connections between the two shafts for transferring the rocking movement of one into the continuous rotation of the other. These connections are so arranged and adapted that the movement of the handle 2 in one direction will cause the main driving shaft 14 to be rotated a different amount from that imparted to it by the movement of said handle in the opposite direction. lI prefer to arrange the parts so that the forward or initial movement' of the handle 2 will rotate shaft 14 the greater distance and in the arrangement shown in the drawings that forward movement will rotate shaft 14 two-thirds of a complete revolution, while the return movement of handle 2 to its original position will rotate the shaft the remaining one-third of a complete revolution. The connections show-n for this purpose areas follows: 16 -is a plate fast to shaft 15. 17 is a plate `loosely mounted on the shaft. Slidingly mounted on plate 17 is a slide plate 18 havingI an extension 19 movable between studs 20 of plate 17.
Slide plate 18 is capable of a sliding movement on plate 17. This sliding plate is provided with two reversely acting sets of gearing 21 and 22. These sets of gearing are arranged at different radial distances from the center of the rock shaft 15 and when operative are concentric therewith, one gearing 21 facing outward from the center, the other facing inward. These gears 21 and 22 are so arranged that if the sliding plate is in its outward radial position gear 21 will mesh with a gear wheel 23 and gear 22 will be out of mesh, while if the sliding plate is in its inward radial position gear 22 will mesh with the opposite side of gear wheel 23 and gear 21 will be out of mesh. Means are provided for throwing one of these sets of gears into mesh with gear wheel 23 when the rock shaft rotates one way and the other into mesh when it rotates the other way. In sliding plate 18 there is a cam slot 24 in which works roller 25 attached to plate 16. Theupper part of plate 16 has a tooth 26. Mounted on plate 17 is a pawl 27 which has an extension 28 at the right and an eX-` tension 29 at the left. The cam surfaces on these extensions' are adapted in the different positions of the parts to strike pins -30 mounted onthe side frame of the machine. Mounted 'on plate 17 are two pins 31, 31 and coacting with these pins but mounted on the side frame are two pawls 32, 32 which are spring 33, 33. Pawl 27 has a pin 34 co-acting with pin 26 of plate 16. y
The operation of these devices is asfollows: In the position shown in Fig. 4, which is the normal position before the operation of the machine, pawl 27 is against pin 30 and tooth 34 is raised out of engagement with tooth 26, pawl 32 is hinged to pin 31;
0ear 21 is in mesh with gear wheel 23 while 2:7 gear 22 is out of mesh. The forward movement of handle 2 will cause roller 25 on plate 16 to move forward. The slope of the cam slot 24 is such that this first movement of the handle will move sliding plate 18 inwardly taking gear 21 out of mesh with gear 23 and putting gear 22 into mesh .with it on its opposite side. .The slight further meyement of the handle will cause extensions 28 of pawl 27 to free its upper pin 30 and the tooth34 will drop out from behind tooth 26. Before this takes place plate 16 will have moved forward or to the right a suliioient distance to bring thel tooth 34' back of tooth 26. By this time roller 25 will have reached the forward end of slot 24., In this position of the parts roller 25 in slot 24 on one side' of pins 26 and 34 will rigidly and positively lock plates 16 and 17 so that forward movement of plate 16 will cause the movement of plate 17 and its connections the same as if the parts formed one rigid structure. This rigidity is essential for they accurate and reliable working of the machine. Further forward movement of the handle will cause gear wheel 23 to rotatein the direction of the arrow which will rotate gear 35 in the direction of its arrow, rotating main driving shaft 14 in the same direction. 1When handle 2 has reached its forward position pin 31 locks into pawl 32, the end 29 of pawl 27 rides up against pin 30 and frees plate 16 from plate 17 preparing the parts for the return movement. When handle 2 begins its backward movement plate 16, being free from plate 17, roller 25 moves to the opposite or rear end of slot'24 throwing gear 22 out of mesh with gear wheel 23 and gear 21,into mesh and freeing pin 31 from pawl 32v permitting the return of -plate 17 and its connections, while the movement of' the parts to the rear frees extension 29 from pin 39 and permits pin 34 to drop down- 26 has moved to the actuated and have limiting stop pins Awork to be ldone by a person rear of pin 34 and the latter drops down in front of pin 36. VPlates 16 and 17 are again rigidly locked together by means of roller 25 and slot 24 and pins 26 and 34, and plate 17is carried backward by the movement of plate 16. Attached to plate 16 is a spring 36 .anchored to the vside frame ofthe machine.
The purpose of this spring is to return the parts to their original or normal positions in case the operator lets go ofthe handle while on its return or does not push it Jback far enough. Spring 36 is so proportloned that it will bring the parts back to their original position in such a case. As the parts reach their original positions pawl 32 again locks with pin 31 locking plate 17 and its connections in their original 4positions and extension 28,011 pawl 27 contacts with pin 30 lifting tooth -34 out of engagement with tooth 36 preparing the parts for the next operation ofthe machine. The reversely acting gears facing in opposite directions and operating upon different sides of the gear wheel 23 when successively in engagement with it, rotate that gear and with it the main driving shaft always in the same direction. The arrangement of these gears 21' and 22 atdi'i'erent distances from the center of the rockshaft enables the main driving shaft to be rotated a greater distance when the handle 2 is moved infone directionthan in 'the other. As shownin the4 machine these parts are so proportioned that on the forwardl or initial movement of handle 2 shaft 14 isrotatedtwo-thirds of a complete revolution and one-third of a revolution on the return of handle 2 to its original position. One advantage of this ,arrangement is that practicallythe entire work performed by the machine is accomplished by the forwardl pull'of the handle .2. In the machine shown no work is performed on the return of` the handle except to return to their original positions a few of the parts of the machine. Through such an arrangement the return spring 36 can be made comparatively very light. Where this spring is made strong as it must be where a considerable part of the work is done on the return of the handle, spring 36 must be madev very heavy thus increasing' the amount of' in operating the machine. In practice it has been found that the ordinary ciprocating handle backward at least to itsl operator will not push a refull limit, or with the force with which he .will pull it forward and that most operators will let the handle go at some point during the return. For these reasons a return spring is essential for practical use. lThis arrangement, moreover, enables the machine to be made very rapid, accurate and positive in operation. In order that gear 21 may pass in front of gear wheel 35, gear wheel 23 is made of double width so that gears 21
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486328A (en) * 1949-10-25 Registering mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486328A (en) * 1949-10-25 Registering mechanism

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