Patent GB-202350-A (GB)
Title: Improvements in or relating to book-binding machines
IPC: B42C11/04
Filed: 1922-03-21
Abstract: 202,350. Young, G. W. March 21, 1922. Bookbinding - m a c h - ines.- In a machine for fixing covers to the stitched or sewn copies of magazines, p a m - phlets, and the like, two oppositely reciprocating carriages are employed, one carriage receiving the book and passing it back downwards over a glueing-wheel and thence over a table where the cover is automatically applied, after which the book is received in the second carriage and passes over a smoothing-roller before being automatically released to a conveyer. Means are also provided for automatically adjusting the height of the table carrying the covers, to compensate for the decreasing height of the pile as the covers are removed. The carrier c at the receiving end of the machine reciprocates along a horizontal guide bar d under the action of links h<2>, o<9> which are actuated by a lever o' and connecting rod o<5> driven by a gear wheel o<2>. The wheel o<2> engages a similar wheel o<3> operating the carrier c' at the delivery end through the link system o<6>, h<3>, the two gear wheels being driven by a motor o<4>. The carrier c' reciprocates along a guide d' at a lower level than the guide d of the carrier c, the two guides overlapping the table s<1> carrying the pile of covers s. Each carrier c, c<1> has a relatively fixed jaw e, f, Figs. 2 and 4, and a movable jaw e<1>, f<1> which is opened or closed as necessary by a cam g, g<1> carried by a rocking arm h, h<1> and engaging a collar i, i<1> on a slidabla spindle or rod j, j<1> connected to the relatively movable jaw. The spindles j, j<1> have a screw-threaded portion engaging a nut, and can be rotated by handles l, l<1> to adjust the amount of opening of the jaws for books of different thicknesses. When the carrier c returns to its receiving position its jaws e, e<1> are open to receive a book, but as soon as its motion is reversed and it' commences to travel towards the glueing roller w the link h<2> rocks the arm h causing the cam g to close the jaws. A table in is adjustably mounted below the jaws at the receiving end in order to position the back of the book at the correct level in the feed carriage c. A positioning stop n, Fig. 2, carried by an arm n<1> pivoted to the jaw e, is disposed across the inner ends of the jaws when a book is inserted, being held in position by a roller n<4> carried by the arm n<1> and pressed inward by a curved rail n3 against the action of a spring at the pivot. On the advance of the carrier the roller leaves the rail and the spring forces the lever n<1> and stop n clear of the jaws. The glueing-roller w is rotated in a vessel of glue by a gear w<1> driven by the gear wheel o<2>, the glue being kept liquid by a hot water receptacle. The movable table s<1> carrying the covers is adjustably supported by two screw-threaded spindles s<4> engaging nuts t in a crosshead s<5> and linked together by a chain and sprocket gear t<1>, the table being progressively raised by the rotation of the spindles s<4> by a pawl and ratchet operated by a spindle t<5> and lever arm t<8> oscillated by a cam on the driving gear-wheel o<3>. The crosshead and table are raised as a whole when a cover is applied, by a cam p<2> on the gear wheel o<2> engaging a lever p<3> and thereby raising an arm p<5> engaging a collar s<2> on a spindle s<3> supporting the table. After applying a cover the table falls again under its own weight. In order to regulate the rate of compensating adjustment of the table when covers of different thicknesses are employed a finger u resting on the uppermost cover is connected through levers u<1>, u<6> to a spring-controlled arm which prevents engagement of the feeding pawl when the rotation of the spindles s<4> is to be checked. After the cover has been applied the jaws e, e<1> open and the book is received in the jaws f, f<1> of carrier c<1> and passed over a roller x which presses the back and has adjustable side flanges to press the side portions adjacent to the back. To prevent creasing of the leading edge of the cover the roller and its supporting lever are momentarily depressed against the action of a spring by an arm p<6> on the rocking-arm p<4> engaging a rod y linked to one of the arms of the roller support. After the cover has been pressed the gripping jaws automatically open, and the book falls between a pair of cover-folding bars z on to an inclined and pivoted delivery table z<1>. The discharge of the book may be assisted by a plunger plate z<3> supported by links z' actuated through a lever z<6> by the carrier-operating lever. The book may be drawn between creasing rollers before its release, to form a crease or groove in the cover adjacent to the back to facilitate opening. According to the Provisional Specification the book is delivered on to a revolving band or tape conveyer, and passing between automatic guides is deposited upon a base or support and clamped by a descending platen. Its edges are then trimmed by cutters before it is delivered into a hopper.