US1919051A

US1919051A - Printing machine

Info

Publication number: US1919051A
Application number: US577489A
Authority: US
Inventors: George C Bauer
Original assignee: Individual
Current assignee: Individual
Priority date: 1931-11-27
Filing date: 1931-11-27
Publication date: 1933-07-18
Anticipated expiration: 1950-07-18

Description

July 18, G c BAUER PRINTING MACHINE Filed Nov. 27, 1951 2 Sheets-Shet 1 Fig 5 4- '41 1:: 4 4| as 551 g' 2G IN V EN TOR.

A T TORNEYS.

July 18, 1933. G. c. BAUER PRINTING MACHINE 1931 2 Sheets-Sheet 2 Filed Nov. 27

' IN V EN T 0R. Gen/yr 6.500%? BY w A TTORNEYS.

-Fateiitecl July 18, 1933 earn GEORGE C. BAUER, OF SANTA MONICA, CALIFORNIA PRINTING MACHINE Application filed November 27, 1931.

This invention relates to printing press construction which is provided with improved means for removing and replacing individual lines of printing type when de sired to make changes in a relat'vely small part of the type which has been set up.

The invent-ion may be applied to a great variety of printing presses wherein the type is mounted upon a rotary cylinder, but is more especially intended for use in relatively small hand operable printing presses and particularly those resembling the multigraph. Printing devices of this kind are well adapted for the use of the management of a restaurant for printing the daily menus, it usually being unnecessary to change the greater portion of the printed menu on any given day. The improvement provided by this invention makes it very convenient for the operator to change only a part of the printed matter while retaining the remainder thereof for reuse.

More specifically the invention pertains to a removable and replaceable type bar in combination with an improved locking device, which while readily releasing the type bars may be depended upon to securely keep them in the assembled or locked in position.

Other objects. advantages and features of the invention may hereinafter appear.

Referring to the accompanying drawings which illustrate what is at present deemed to be a preferred embodiment of the invention.

Fig. 1 is a ertical mid-section of the type cylinder together with parts which cooperate therewith. this view being sectioned on line 1-1 of Fig. 6.

4:0 2 is a fragniental elevation looking at the part of Fig, 1 adjacent thereto.

Fig. 3 is a side elevation of one of the type bars showing the same in a position suggestive of the insertion thereof into its operative position.

7 Fig. 1 is an enlarged cross section of said bar taken on line 4.4 of Fig. 3.

Fig. 5 is a plan view of an end portion of the type cylinder, the view including parts 50 which cooperate with said cylinder.

Serial No. 577,489.

Fig. 6 is a cross section on line 66 of Fig. 1.

Fig. 7 is an end elevation of the complete machine.

Fig. 8 is a side elevation thereof.

Fig. 9 is a plan View of one end portion of the printing cylinder.

Fig. 10 is a transverse section on line 10-1O of Fig. 9.

Referring in detail to the drawings, the operating parts of the machine are mounted upon and between the

end frames

8 and 8a thus non-rotatably supporting the main shaft 9 to which is fixed the hub portion 10a of the stationary end disc or plate 110 seen in section at the left hand portion of Fig. 1, a pin 10?) desirably being used to secure the parts 10 and 10a to said shaft. Said disc 10 is provided with a peripheral notch 11 with which cooperates a radially adjustable key 12, the function of which will presently be described.

Upon the hub portion 10a is fitted the hub portion 13a of a circumferentially adjustable head 13, said head having therein a broad segmental notch or cut-away portion 1 1 as shown in Fig. 6. At a distance from its periphery each wall of said notch 14 is provided with a groove 14a. When the detachable segment is in place it keeps the radially adjustable key 12 from being displaced by moving radially outward during the rotation of the head 13 together with said segment. Into the cut-away portion and its grooves 14a slides a segmental retainer 15 having at each opposite edge a bead 15a, said beads having a working fit within the grooves 14a.

The retainer plate 15, when the same is inserted for the purpose of retaining the type bars in place, is secured in such position desirably by means of a. screw 1500 which extends through said plate and has its inner portion screwed into a socket provided therefor in the inner face of the cut-away portion 14 of the head 13. The key 12 is provided in each of its opposite sides with a broad groove 122 and the head 13 is provided with a radial groove 132 into which the grooved portion of the key is slidably fitted.

Referring now more particularly to the structure shown in section in. the right hand portion of Fig. 1, the head or disc 20 shown at that end of the device is provided with a hub 2041 through which is tappeda set screw 21 the inner end portion of said set screw extending through a sleeve or bushing An inner bearing sleeve on bushing has a working it upon the adjacent portion of the shaft 9, and the set screw 21 is preferably screwed down against this sleeve to cause the head 20 and long sleeve to rotate therewith. An internal bearing disc 25 is secured to the head 20 preferably by means of a series of rivets or bolts 26, the inner ends of these bolts being shown as projecting through a ring 27 which abuts against the left hand face of tne disc 25 as seen in Fig. 1. he diameter of said disc is considerably less than the diameter of the head 20 and the type cylinder 28 has one of its ends fitted over said disc 25 with a working fit, that end of the type cylinder abutting against the adjacent face of the head 20, said head 20 is provided in outwardly spaced relation to said type cylinder with a lateral flange 29 which aids in holding the type bars in place. The central portion of the disc is provided with an aperture to receive the sleeve 22.

In the left hand portion of the structure as seen in Fig. 1, a head 31 is provided with a central aperture whereby it is fitted with a tight press fit upon the sleeve 22 .to turn therewith. Adjacent to this point a bearing sleeve 32 is provided within the sleeve 22 thus affording a working fit betwee this part of the sleeve'and the shaft 9. The head 31 is provided on its inner side with an annular peripheral recess 31a into which is fitted with a working fit the adjacent end portion of the type cylinder 28. The head 31 is provided around its outer side with a pcripheral end flange 31 into which is cut a radial slot 33 said slot alsoextending into the body portion of said head 31. lVithin said slot is secured a leaf spring 3 1 preferably by means of a screw 35. The free outer end portion of the spring Slis provided with a bend 34a which coope'ates with a slight recess in the key 12 to yieldingly maintain: said key in the outer position shown in Fig; 1. When said key is secured in this position it engages a part of the slot thereby locking head 13 together with its removable segment 34a to head so that at such time said

heads

31, 13 and the segment 3 can be turned only as a unit.

hen said key 12 adjusted to its inner position gravity keeps it in place. lVhen said key 12 is in its down position wherein it engages the notch 11 of the oisc 10. it locks the head 13 together with the inserted segmental plate against rotation by reason of keying these parts to the non-rotatable disc or plate 10. The objectof this locking means is to maintain the cut-away portion 14 (see Fig. 6) at the upper side of the device in or ler that the type bars may be conveniently inserted and removed.

1 3 shows one of the channel shaped type bars 10 detached, a line of type 4-1. being e by said bar. The type bars 10 are provided with a line of type and are provided in av sufiicient number to print at a single impression a page or sheet of printed matter of the length desired. The length of these type bars is such that they fit snu between the

heads

13 and 20. One end of each 1e bar is held in place by means of flange 29 or the head and the other end of each of said type bars is held in place by the flange 13a. of 1 cad 13 when the type bars are loclted place preparatory to the printing operation as will later be described. 7

Each of the type bars 40 consists of a strip of sheet metal which is of a resilient charactm' and which is channel shaped in cross section as well shown in Fig. 4:. This strip of metal has an outwardly deflected lip 100. along each upper edge thereof which facilitates insertion of the type 41. The width benveen the two sides of the type holder 10 is normally slightly less than the type in order that the type may be retained in'place by a gripping lit. Then the type 10 is in place in a series of adjacent type bars assembled in the operative posiion, the lips 40a of adjacent typo bars come into contact with each other thus making a close fit between the type bars. This construction is necessary owing to the fact that the lips 40a are farther from the center of the type cylinder than is the base portion of the type bar 40 and therefore the extra space caused by the greater distance from the center of the type cylinder equires being compensated for.

The stop bar is attached to the type cylinder 28 in any suitable manner as by means of screws 45a, and the stop bar 4:6 has one of its ends secured to the head 20 seen in the right hand portion of Fig. 1 by any suitable means as by the screw 20m. The other end of said stop bar 16 is secured to the other head 31 desirably by means of screw 46m.

The bar 46 forms a fixed stop and the bar 15 1s circuinferentially ad ustable by turning 1J-T- "I -i "(w- L the type cylinoer to whlcn said bar so 1s a. tached. By this arrangement type ba s each furnished with a line of type, may be nserted in the desired number around the gre ..r portion of the ci 'cumference of the type cylinder 7 28. opposite sides of the set of type bars thus inserted being engaged by the stops and 416 when the stop 45 has been properly adjusted as will hereinafter be further explained.

In Fig. 8 the outline of the driving gear 50 is indicated in dotted lines, said being fixed to a shaft 51 which is rotated. in any suitable manner for example by means of the hand crank 52. Said driving gear 50 meshes with the main driven gear 53, the latter gear being fixed to the hub 13a to provide means for rotating the type cylinder 28. The inking roller is mounted upon the shaft 56, a. guard 57 being'interposed between said inking roller and the bed plate 58 over which the paper being printed travels. The impression roller 60 is mounted upon the shaft 61 which is driven by the gear 62, the latter gear being in mesh with the main driven gear 53. The paper is held down to the impression roller by means of the guide rollers 65 each of which is pivotally mounted on the free end portion of an arm 66 provided therefor.

In order to lock the type cylinder 28 together with the stop bar thereof in a circumferentially adjusted position, a spring arm 70 is provided, one end ofsaid arm being secured to the type cylinder 28 by means of a screw 71, the other end of said bar engaging yieldably within a series of seats or notches 7 2 which are provided in the ring 27, said notches being spaced to correspond to the width of the inserted type bars.

In order to keep the spring 70 from lateral displacement, a guide 7 5 is provided therefor which permits the spring to yield radially but prevents a sidewise movement thereof. Said guide is shown secured to the type cylinder 28 by means of a screw 76.

At times it is necessary to lock said spring arm TO positively in one of the seats 7 2 with which it cooperates. For this purpose a slide 78 is provided, said slide having at one end a tongue 7 9 which may be adjusted to extend under the free end of the spring 7 0 to keep it from unseating from any particular seat 72.

The type cylinder wall is provided with a circumferentially extending slot 78a near its right hand end as seen in Fig. 9. Said slot receives the headed pins 80 and 81, said pins both extending through said'slot with a working lit and being spaced apart a distance somewhat less than the length of the slot in order that they may permit a slight movement between the type cylinder and the slide 78 which carries said pins. The pin 80 has a head or knob 80a; to provide for manual adjustment of the slide. The corresponding head of the other pin 81 travels in a countersink S6 in order that it may move underneath the type bar d5.

Said spring 70 when locked in a seated position in one of the seats 7 2 prevents relative rotation between the type cylinder 28 and the head 20 and consequently prevents a relative movement between the type retaining bars l5 and 46. After a complete set of type bars together with type mounted upon them has been put in place upon the type cylinder and the two bars 45 and i6 have been brought into snug engagement with the outer sides of the outside type bars of the set, then the locking feature which has just been described opthe production of printed matter, the operator will rotate the crank 52 with one hand and with the other hand will feed the paper to the machine in the well known manner followed in operating the inultigraph type of printing device.

It will also be seen that the slide 78 is frictionally slidable within the cylinder 28 by the pressure exerted by spring member 95.

' Owing to the fact that the type cylinder extends around the periphery of the head 25' with aworking lit and that said cylinder, separately considered, consists of an open ended sleeve and has the releasable locking arm 70 mounted upon its inner surface, a simple construction is provided wherein the means for adjusting the head 25 and the sleeve 28 with relation to each other is housed in a workman-like manner.

I claim:

1. In a printing cylinder of the kind described, in combination, a shaft, a pair of heads turnably mounted upon said shaft in spaced relation to each other, a type cylinder which separately considered consists ofan open ended sleeve having its end portions mounted upon said heads with a working fit, said cylinder being circumferentially adjustable with relation to both of said heads,

a set of type bars for said cylinder, means a portion of which is mounted on the inner surface of said sleeve to releasably maintain said type cylinder in the adjusted position wlth relation to one of said heads, such head being provided with a peripheral flange adapted to hold said type bars in their operative position and said cylinder having a type retaining bar extending therealong, and a third circumferentially adjustable mounted upon said shaft at the other end of the type cylinder from the last recited head, said third head being provided with means which in one of its circumferential. positions locks the type bars in place and in another position releases said type bars.

2. In a printing device of the kind described, in combination, a shaft, a head turnably mounted upon said shaft, said head having around one face thereof a corner recess, a type cylinder one end portion of which is turnably fitted within said recess and which is flush with the periphery of said head adj acent to said recess, means to turnably support the other end portion of said cylinder upon said shaft, a set of type bars which are adapted to be mounted upon said cylinder with end portions overlying said recess together with the remaining portion of the head which is provided with said recess, and

head

means to releasably lock said type bars in their aforesaid operative position.

3. In a printing device of the kind described, in combination, a shaft, a type cylinder, means to rotatably support said cylinder upon said shaft, said means including a head .at one end of said cylinder mounted upon said shaft-,said head and cylinder being rotationally adjustable with relation to each other, a non-rotating part upon which said head is mounted, a radially adjustable key acting between said head and part, a set of type bars mountable upon said cylinder, said head being provided with a detachable segment for the purpose of locking one end of said type bars in the operative position upon said cylinder and releasing said type bars for removal, and cooperating means to hold the other ends of said type bars in place in the operative position, said segment, when in place serving to prevent outward displacement of said key.

4'. Ina printing device of the kind described, the combination with a printing cylinder, means to support the same, said means including a non-rotatable shaft; a set of type bars for mounting upon the periphery there of, a hub member fixed to said shaft, a head member mounted toturn about said hub member, saidhead member being provided with a cutaway portion to facilitate the insertion of the type bars in their operative position upon the periphery of said cylinder, and a locking device which in one position cooperates with said hub member to lock said head against rotation with relation to said shaft to maintain its cut-away portion uppermost and in another position permits a turning movement of said head around said hub member and said shaft.

GEORGE C. BAUER.