US3358918A

US3358918A - Paper feed mechanism for a printing calculating or like machine

Info

Publication number: US3358918A
Application number: US541625A
Authority: US
Inventors: Gassino Teresio; Bertino Lorenzino
Original assignee: Individual
Current assignee: Olivetti SpA
Priority date: 1965-04-10
Filing date: 1966-04-11
Publication date: 1967-12-19
Anticipated expiration: 1984-12-19
Also published as: BE679270A; CH434829A; GB1136015A; DE1524053A1; FR1475475A

Description

Dec. 19, 1967 GASSINO ETAL PAPER FEED MECHANISM FOR A PRINTING CALCULATING OR LIKE MACHINE Filed April 11, 1966 2 Sheets-Sheet l Dec. 19, 1967 T. GASSINO ETAL PAPER FEED MECHANISM FOR A PRINTING CALCULATING OR LIKE MACHINE Filed April 11, 1966 2 Sheets-Sheet 2 INVENTORS TERESIO GASSINO LORENZINO BERTINO BY 2%;-

A NT

United States Patent ABSTRACT (3F THE DISCLQSURE A paper feed mechanism for a printing machine comprises a platen rotated before the printing in one direction retracting said paper to a printing position and rotated after the printing in the opposite direction advancing the paper to a reading position. The platen is secured to a ratchet wheel engaged by a spring urged locking member reciprocable to rotate the platen. An intercepting member arrests the ratchet wheel after being rotated to the printing position while the locking member continues its stroke at least one line farther. After printing, the intercepting member releases the ratchet wheel, and the locking member rotates the platen in the opposite direction advancing the last printed line to the reading position.

This invention relates to a paper feed mechanism for a printing calculating or like machine, comprising a platen adapted to be rotated before the printing in a predetermined direction a plurality of line spaces for retracting said paper and to be rotated after the printing in an opposite direction for advancing said paper at least one line space farther than said plurality of line spaces and a ratchet wheel bodily rotatable with said platen and normally locked by a spring urged locking member.

There are known paper feed mechanisms of this type, wherein the last printed line is brought automatically above the upper edge of the conventional tearing ruler. The purpose of these mechanisms is to retract and then to advance said paper so that the amounts printed on the tape are clearly visible after each operation of the machine and so that the paper may be cut by said tearing ruler directly in the reached position without interfering with the legibility of the printed amounts. All these known mechanisms are provided with different means for rotating the platen in the two directions, whereby the mechanisms are relatively intricate.

This disadvantage is obviated by the paper feed mechanism according to the invention, which is characterized by cyclically operating means for moving said locking member through a predetermined forward stroke before the printing, said locking member being adapted to rotate yieldably said ratchet wheel in said predetermined direction, an intercepting member being provided for arrest ing said ratchet wheel after being rotated said plurality of line spaces in said predetermined direction, while said locking member completes said forward stroke independently from said ratchet wheel, restoring means being effective after the printing for returning said locking member through a rearward stroke equal to said forward stroke to rotate said ratchet wheel in said opposite direction said farther line space.

This and other characteristics of the invention will become apparent from the following detailed description of a preferred embodiment thereof, and from the accompanying drawings wherein:

FIG. 1 is a left hand longitudinal partial sectional view of a paper feed mechanism according to the invention embodied in a printing calculating machine;

FIG. 2 is a partial front view of the mechanism;

FIG. 3 is a left hand longitudinal sectional view taken according to the line IIIIII of FIG. 2;

FIG. 4 is a left hand longitudinal sectional view taken according to the line IV-IV of FIG. 2;

FIG. 5 is a left hand longitudinal view of a detail of the mechanism;

FIG. 6 is a longitudinal view of another detail of the mechanism.

With reference to FIG. 1, the numeral 11 indicates a conventional platen 11 secured to a shaft 12 rotatably mounted on the machine frame and adapted to support a paper strip 10. A printing device compris'mg a set of slides 16, each one carrying a typewheel 13, is adapted to print simultaneously on the paper 10 under the control of a universal bar 17 reciprocated in a known manner by a cyclically rotating shaft 18, which represents the main shaft of the machine. Secured to each typewheel 13 is a pinion 14 steadily engaged by a vertical rack 15, the movement of which is controlled by a corresponding actuator not shown in the drawings.

In the rest position the printed amount is visible above the upper edge of a tearing ruler 19 (FIG. 2) having a pin 22 cooperating with a toothed slot 20 provided on the paper release frame 21 and adapted to be transversely displaced by manually operating a lug 23 integral with the ruler 19. The upper edge of the ruler 19 is provided with a set of projections 24 adapted to provide the cut edge of the paper with a set of notches. The projections 24 are distanced according to three typewheels 13 to facilitate the reading of the printed amount by subdividing the same in groups of orders.

Secured to the shaft 18 is a cam 26 (FIG. 1) adapted to cooperate with a bail 27 fulcrumed on a stationary shaft 28. Linked with an arm 29 of the bail 27 is a link 31, which is provided with an arcuate slot 32 engaged by a pin 33 of a lever 36 rotatably mounted on the shaft 12. The slot 32 has a predetermined length corresponding, for instance, to five line spaces. At rest the lever 36 is urged by a spring 37 to cause the pin 33 to contact the lower edge of said slot 32 as shown in FIG. 1. Furthermore, secured to the lever 36 is a pivot 41, pivotally mounting a locking member 42 which is urged by a spring 44 to engage a ratchet wheel 46 intergral with a sleeve 47 secured to the shaft 12. The teeth of the wheel 46 have a pitch corresponding to a line space.

Fulcrumed on the pivot 41 is also a second locking member 43 (FIG. 4) urged by a spring 48 to engage one of three notches 49, 50, 51 provided on a cam shaped sector 52 idly mounted on the shaft 12. Normally, the member 43 engages the intermediate notch 50 as shown in FIG. 4.

A lever 53 (FIG. 1) is adapted to be manually or automatically located in one of a pair of positions according to the character of the operation of the machine, i.e. whether it is a printing cycle or a non-printing cycle, in a known manner and is provided with a pin 54 adapted to cooperate with a shoulder 56 of a slide 57.

Normally in the printing cycles, the lever 53 is located in the position shown in FIG. 1, and therefore the pin 54 does not engage the shoulder 56. A spring 61 urges the slide 57 to contact with a shoulder 58 a pin 59 secured on a slide 62. In the calculating printing cycles a pin 63 locates the slide 62 in the position of FIG. 1, whereas in the total taking printing cycles the pin 63 is displaced rearwards in a known manner to cause the

slides

62 and 57 to be moved rearwards.

The slide 57 is linked with a lever 64 fulcrumed on a stationary shaft 67 and is provided with a pin 69 engaging a slot 71 provided on a forked slide 72. The slide 72 is fulcrumed on an arm 73 of the bail 27, and is also proa vided with

font shoulders

74, 76 and 77, 78 two by two symmetrically located with respect to the stationary shaft 67. The

shoulders

74, 76, and the shoulders 77, 78 respectively, are adapted to cooperate with a pair of

lugs

79 and 81 of a lever 82 fulcrumed on the stationary shaft '67. Furthermore the lever 82 is connected through a rod 84 (FIG. 4) to the sector 52.

The paper feed mechanism comprises an intercepting lever 87 fulcrumed on the shaft 67 and having a bent lug 86' and urged by a spring 88 to Contact the sector 52. The bent lug 86 is normally located at a distance from a slope 89 of the sector 52 corresponding to four line spaces.

Fulcrumed on the shaft 67 is also a bail 93 (FIG. 3) having a first lug 92 adapted to cooperate with a ratchet Wheel 91 similar to the wheel 46 and integral with the sleeve 47, so that both the

wheels

46 and 91 are bodily rotatable with the shaft 12. Furthermore the bail 93 is provided with a second bent lug 95 urged by a spring 94 to sense the paper 10 above the upper edge of the tearing ruler 19.

The paper 10 may be introduced into a conventional paper-guide frame 96 (FIG. 5) secured to a shaft 116 rotatably mounted on the machine frame. Secured to the shaft 116 is also a lever 117 having a pin 118 urged by a spring 122 to contact a cam shaped edge of the frame 21 comprising a tapered portion 119 and a horizontal portion 120. The frame 96 is provided with a pair of notches engaging a shaft 97 secured to three paper feed rollers 98. Secured to the shaft 97 is also a pinion 99 (FIG. 6) meshing with a pinion 101 provided with two radial opposite projections 107 (FIG. 2) engaging two corresponding notches 106 of a ring 102 also provided on the opposite side with two other notches 103 shifted 90 degrees with respect to the notches 106 engaged by two projections 104 of the wheel 91. Thus the retracting and advancing rotation of the

wheels

46 and 91 is transmitted to the pinions 101 and 99 through the ring 102. The pinion 101 is rotatably mounted on a hub 109 integral with an arm 108 (FIG. 6) provided with a slot 111 entered by the shaft 12. The arm 108 is also provided with a circular hole 112 entered by a circular disk 110 integral with the pinion 99.

The paper feed mechanism operates as follows:

As already mentioned, during a calculating printing cycle, the lever 53 (FIG. 1), the

slides

57 and 62 remain in the shown position and the lever 64 is not rocked. During the cycle of the main shaft 18, the cam 26 rocks clockwise the bail 27, thus displacing the link 31 and the slide 72 upwards, but the

lugs

79 and 81 are not affected by the slide 72. Therefore the sector 52 (FIG. 4) remains in the position shown on FIG. 4. In turn the link 31 (FIG. 1) rocks the lever 36 clockwise together with the rod 41, whereby the two locking members 42 and 43 (FIG. 4) are rotated clockwise. The locking member 42 (FIG. 1) yieldably rotates the ratchet wheel 46 clockwise bodily with the sleeve 47 and the platen 11, whereas the locking member 43 (FIG. 4) yieldably rotates the sector 52 clockwise.

When the sector 52 has been rotated four line spaces, the slope 89 of the sector 52 causes the lug 86 of the lever 87 to engage a tooth of the ratchet wheel 46, thus locking the shaft 12, the platen 11 and the paper (FIG. 2) while the two locking members 42 and 43 and the sector 52 are rotated a further line space, the locking member 42 tripping a tooth on the wheel 46. The paper 10 has been thus retracted four line' spaces, while the locking member 42 completes its stroke of five line spaces, independently from the ratchet wheel 46.

After the typewheels 13 (FIG. 1) print the set up amount on the paper 10, the cam 26 causes the bail 27 to return counterclockwise. The link 31 and the slide 72 are restored and the lever 36 is restored by the spring 37 together with the locking members 42 and 43. The locking member 42 now rotates the ratchet wheel 46, the sleeve 47, the platen 11 and the paper 10 five line spaces counterclockwise.

It is thus clear that the cyclically operating means 31, 36, are adapted to reciprocate the locking member 42 through a predetermined stroke to rotate yieldably the ratchet wheel 46 clockwise to retract the paper four line spaces, and then to advance same five line spaces and that the intercepting member 86 (FIG. 4) locks the ratchet wheel after being rotated said four line spaces in the retracting direction.

Now, supposing that a total key is depressed, the pin 63 (FIG. 1) is displaced rearwards, thus causing the spring 61 to displace the

slides

57 and 62 rearwards, and to rock the lever 64 counterclockwise. Therefore, the pin 69 of the lever 64 rocks the slide 72 clockwise, whereby the shoulder '76 is located in front of the lug 79 of the lever 82. When the bail 27 is rocked clockwise the shoulder 76 (FIG. 1) of the slide 72 encounters the lug 79 and rocks the lever 82 clockwise. The rod 84 thus rotates the sector 52 (FIG. 4) one line space clockwise with respect to the wheel 46. Thus the locking member 43 is caused to engage the notch 49 of the sector 52. Upon printing the total the paper 10 is advanced five line spaces as in the above case, while the sector 52 is returned also five line spaces and locates the slope 89 at a distance of three spaces from the lug 86. At the end of the total taking cycle, the pin 63 (FIG. 1), the

slides

62 and 57 are restored causing the lever 64 to return the slide 72 in the central position shown on FIG. 1.

If now a new calculating printing cycle is effected the sector 52 (FIG. 4) upon being rotated clockwise three line spaces causes the lug 86 to lock the wheel 46 and the platen 11, while the locking member 42 trips two teeth on the wheel 46. The shoulder 77 of the slide 72 (FIG. 1) encounters now the lug 81 of the lever 82, which is thus returned in the position shown in FIG. 1. The lever 82 thus causes the sector 52 (FIG. 4) to rotate one line space counterclockwise with respect to the wheel 46, whereby the locking member 43 engages again the notch 50. Then the two locking members 42 and 43 (FIGS. 1 and 4) perform their return stroke for advancing the paper five line spaces and consequently the foregoing printed total and the new printed amounts are distanced two line spaces instead of one line space. The lug 66 contacts the sector 52 again at a distance of three line spaces from the slope 89, thus predisposing one line space for the next printing cycle.

Supposing now that after a printing cycle, a non-printing cycle is effected. Then the lever 53 (FIG. 1) is rocked counterclockwise and through the pin 54 and the shoulder 56 displaces the slide 57 forwards, thus rocking the lever 64 clockwise. Consequently, the slide 72 is rocked counterclockwise and locates the shoulder 78 on the path of the lug 81 of the lever 82. During the first part of this cycle the paper is retracted four line spaces and the shoulder 78 encounters the lug 81, thus rocking the lever 82 counterclockwise and the sector 52 (FIG. 4) counterclockwise one line with respect to the locking member 43 which now engages the notch 51. Then in the second part of this cycle the paper is advanced five line spaces, but the sector 52 locates the slope 89 at a distance of four line spaces from the lug 86. i

If then a calculating printing cycle is effected the lever 53 (FIG. 1), the

slides

62 and 57, the lever 64, and the slide 72 are restored to the position shown on FIG. 1. In the first art of this calculating printing cycle the sector 52 (FIG. 4) is rotated clockwise, but the lug 86 of the intercepting lever 87 locks the platen 11 after five retracting line spaces, whereby the locking member trips no tooth on the wheel 46. The shoulder 74 of the slide 72 (FIG. 1) encounters now the lug 79 of the lever 82 which is returned to the position shown on FIG. 1, thus rotating the sector 52 (FIG. 4) one line space clockwise with re-v spect to the locking member 43 which engages again the notch 50.

When the two locking members 42 and 43 (FIGS. 1 and 4) are returned counterclockwise, the paper is advanced five line spaces and consequently the new printed amount and the amount printed before the nonprinting cycle are distanced one line space only. The lug 86 contacts again the sector 52 at a distance of three line spaces from the slope 89, thus predisposing one line space for the next printing cycle.

Supposing now that a total taking cycle is requested after a non-printing cycle. During the retracting stroke of the paper, the shoulder 76 of the slide 72 encounters the lug 79 of the lever 82 which was rocked counterclockwise. The lever 82 is thus rotated clockwise, thus rocking the sector 52 clockwise two line spaces with respect to the locking member 43 which engages now the notch 49 of the sector 52. At the end of the total taking cycle the lug 86 contacts the sector 52 at a distance of two line spaces from the slope 89.

Supposing that after a printing cycle the paper is cut by the tearing ruler 19 (FIG. 2). Now no paper is sensed by the lug 95 (FIG. 3), whereby the spring 94 causes the lever 93 to lock with the lug 92 the ratchet wheel 91. Consequently, the retracting stroke of the paper is prevented, thus avoiding the typewheels 13 to print a new amount near to the paper edge and causing the locking member 42 (FIG. 1) to trip five line spaces on the teeth of the wheel 46. During the returning stroke of the locking members 42 and 43, the paper tape is advanced five line spaces and engages again the lug 95 (FIG. 3), whereby the lever 93 is rocked counterclockwise and disengages the lug 92 from the wheel 91.

In all the hereinabove described cases the wheel 91, through the two projections 104 and the notches 103 rocks the ring 102, which through the notches 106 and the projections 107 rocks the pinion 101. The pinion 99 is thus rotated together with the shaft 97, and the paper feed rollers 98, synchronously with the platen 11, whereby the paper 10 is moved through the retracting and advancing stroke both by the platen 11 and the feed rollers 98.

When the paper is to be introduced between the paperguide-frame 96 and the platen 11 (FIG. 5), the frame 21 is manually displaced forwards bodily with the tearing ruler 19 by sliding with a pair of slots 125 on the universal bar 17. The portion edge 119 of the frame 21 causes the arm 117 to rock against the urge of the spring 122, whereby the paper-guide frame 96 is removed from the platen 11 bodily with the arm 117 and the rollers 98.

During the introduction of the paper the frame 21 is held in the forwards displaced position by the arm 117 which engages the horizontal edge 120 of the frame 21. After the introduction of the paper a printing cycle may be started without returning the frame 21 rearwards. In fact, immediately before the printing of the typewheels 13, the universal bar is moved rearwards and automatically restores the frame rearwards.

When the frame 96 is removed from the platen 11 the shaft 97, through the pinion 99 and the hole 112 displaces the arm 108 (FIG. 6) downwards, whereby the pinion 101 is also displaced downwards through the projection 109. Therefore the pinion 101 continues to engage the ring 102 and the two pinions 101 and 99 remain mutally engaged even if the mutual position of the two

shafts

12 and 97, i.e. of the platen 11 and the feed roller 98, is changed according to the paper thickness.

It is intended that modifications, improvements and additions of parts may be made to the described paper feed mechanism without departing from the scope of the invention as defined by the appended claims.

What we claim is:

1. In a paper feed mechanism for a printing calculating or like machine, having a platen adapted to be rotated before the printing in a predetermined direction a plurality of line spaces for retracting said paper and to be rotated after the printing in an opposite direction for advancing said paper at least one line space farther than said plurality of line spaces, a ratchet wheel bodily rotatable with said platen, and a spring urged locking member normally locking said ratchet wheel, the combination comprising:

(a) cyclically operating means for moving said locking member through a predetermined forward stroke before the printing,

(b) means for causing said locking member to yieldably rotate said ratchet wheel in said predetermined direction,

(c) an intercepting member for arresting said ratchet wheel after being rotated said plurality of line spaces in said predetermined direction, said locking member being adapted to complete its said forward stroke independently from said ratchet wheel,

(d) and restoring means effective after the printing for returning said locking member through a rearward stroke equal to said forward stroke to rotate said ratchet wheel in said opposite direction said farther line space.

2. In a paper feed mechanism for a printing calculating or like machine, having a platen adapted to be rotated before the printing in a predetermined direction a plurality of line spaces for retracting said paper and to be rotated after the printing in an opposite direction for advancing said paper at least one line space farther than said plurality of line spaces, a ratchet wheel bodily rotatable with said platen, and a first spring urged locking member normally locking said ratchet wheel, the combination comprising:

(a) a cyclically operating means for moving said first locking member through a predetermined forward stroke before the printing,

(b) means for causing said first locking member to yieldably rotate said ratchet wheel in said predetermined direction,

(c) an intercepting member for arresting said ratchet wheel after being rotated said plurality of line spaces in said predetermined direction, said first locking member being adapted to complete said forward stroke independently from said ratchet wheel,

(d) restoring means effective after the printing for returning said locking member through a rearward stroke equal to said forward stroke to rotate said ratchet wheel in said opposite direction said farther line space,

(e) a cam for controlling said intercepting member,

(f) a second spring urged locking member normally locking said cam and bodily reciprocable with said first locking member, said second locking member being adapted to yieldably operate said cam in both said directions,

(g) and settable means for setting said second locking member in a variable relationship with said cam.

3. In a paper feed mechanism for a printing calculating or like machine, having a platen adapted to be rotated before the printing in a predetermined direction a plurality of line spaces for retracting said paper and to be rotated after the printing in an opposite direction for advancing said paper at least one line space farther than said plurality of line spaces, a ratchet wheel bodily rotatable with said platen, and a first spring urged lock- 5 ing member normally locking said ratchet wheel, the

combination comprising:

(c) an intercepting member being provided for arresting said ratchet wheel after being rotated said plurality of line spaces in said predetermined direction,

said first locking member being adapted to complete said forward stroke independently from said ratchet wheel,

(e) a cam for controlling said intercepting member,

(f) a second spring urged locking member normally locking said cam and bodily reciprocated with said first locking member,

(g) said second locking member being adapted to yieldably rotate said cam in both said directions,

(h) and settable means selectively operated simultaneously with said cyclically operating means for setting said cam in a predetermined relationship with respect to said second locking member, whereby said intercepting member in the next following cycle will arrest said ratchet wheel according to said predetermined relationship.

4. In a paper feed mechanism for a printing calculating or like machine, having a platen adapted to be rotated before the printing in a predetermined direction a plurality of line spaces for retracting said paper and to be rotated after the printing in an opposite direction for advancing said paper at least one line space farther than said plurality of line spaces, a ratchet wheel bodily rotatable with said platen, and by a first spring urged locking member normally locking said ratchet wheel, the combination comprising:

(b) means causing said first locking member to yieldably rotate said ratchet Wheel in said predetermined direction,

(e) a cam for controlling said intercepting member,

(g) a pair of diametrically opposite elements secured to said cam,

(h) and a pair of cyclically operated pawls adapted to engage selectively said elements for setting said second locking member in said variable relationship with said cam.

5. In a paper feed mechanism for a printing calculating or like machine, having a platen adapted to be rotated in a predetermined direction a plurality of line spaces for retracting said paper and to be rotated after the printing in an opposite direction for advancing said paper at least one line space farther than said plurality of line spaces, a ratchet wheel bodily rotatable with said platen, and a spring urged locking member normally locking said ratchet wheel, the combination comprising:

(a) a cyclically operating means for moving said locking member through a predetermined forward stroke before the printing,

(b) means for causing said locking member to yieldably rotate said ratchet wheel in said predetermined direction, I

(c) an intercepting member for arresting said ratchet wheel after being rotated said plurality of line spaces in said predetermined direction, said locking member being adapted to complete said forward stroke independently from said ratchet wheel,

(d) restoring means effective after the printing for returning said locking member through a rearward stroke equal to said forward stroke to rotate said ratchet wheel in said opposite direction said farther line space.

(e) a sensing member for sensing the paper substantially in correspondence with the last printed line,

(f) and an intercepting element connected to said sensed member for arresting said ratchet wheel at the beginning of the rotation in said predetermined direction in the case no paper is sensed by said sensing member.

6. In a paper feed mechanism for a printing calculating or like machine, having a platen adapted to be rotated in a predetermined direction a plurality of line spaces for retracting said paper and to be rotated after the printing in an opposite direction for advancing said paper at least one line space farther than said plurality of line spaces, paper feed rollers yieldably contacting said platen, a ratchet Wheel bodily rotatable with said platen, and a spring urged locking member normally locking said ratchet wheel, the combination comprising:

(e) rotation transmitting means for causing said platen to synchronously rotate said rollers in opposite directions, whereby said paper is always moved by the combined action of said platen and said rollers,

(f) and connecting means for enabling said transmitting means to be effective independently from the mutual distance between said platen and said rollers.

References Cited UNITED STATES PATENTS 2,297,743 10/ 1942: Carroll et a1. 235--60.51 3,075,626 1/1963 Schultz 235-60.51

RICHARD B. WILKINSON, Primary Examiner.

L. FRANKLIN, Assistant Examiner.

Claims

1. IN A PAPER FEED MECHANISM FOR A PRINTING CALCULATING OR LIKE MACHINE, HAVING A PLATEN ADAPTED TO BE ROTATED BEFORE THE PRINTING IN A PREDETERMINED DIRECTION A PLURALITY OF LINE SPACES FOR RETRACTING SAID PAPER AND TO BE ROTATED AFTER THE PRINTING IN AN OPPOSITE DIRECTION FOR ADVANCING SAID PAPER AT LEAST ONE LINE SPACE FARTHER THAN SAID PLURALITY OF LINE SPACES, A RATCHET WHEEL BODILY ROTATABLE WITH SAID PLATEN, AND A SPRING URGED LOCKING MEMBER NORMALLY LOCKING SAID RATCHET WHEEL, THE COMBINATION COMPRISING: (A) CYCLICALLY OPERATING MEANS FOR MOVING SAID LOCKING MEMBER THROUGH A PREDETERMINED FORWARD STROKE BEFORE THE PRINTING, (B) MEANS FOR CAUSING SAID LOCKING MEMBER TO YIELDABLY ROTATE SAID RATCHET WHEEL IN SAID PREDETERMINED DIRECTION, (C) AN INTERCEPTING MEMBER FOR ARRESTING SAID RATCHET WHEEL AFTER BEING ROTATED SAID PLURALITY OF LINE SPACES IN SAID PREDETERMINED DIRECTION, SAID LOCKING MEMBER BEING ADAPTED TO COMPLETE ITS SAID FORWARD STROKE INDEPENDENTLY FROM SAID RATCHET WHEEL, (D) AND RESTORING MEANS EFFECTIVE AFTER THE PRINTING FOR RETURNING SAID LOCKING MEMBER THROUGH A REARWARD STROKE EQUAL TO SAID FORWARD STROKE TO ROTATE SAID RATCHET WHEEL IN SAID OPPOSITE DIRECTION SAID FARTHER LINE SPACE.