Nova Patents
US2829228A

Casing or covering of books

Abstract

This record has no abstract on file.

US2829228A, drawing sheet 1
Sheet 1 of 7

Term

Term ended

Expired 1 April 1975, 51.5 years ago.

  1. Priority and filed
  2. Granted
  3. Expired
  4. Today

3 claims: 2 independent, 1 dependent

  1. 1
    05 I claim:1. Apparatus for applying a casing to a bound book comprising, in combination, press means comprising spaced upper and lower pressure plates constructed of electrically insulated material for receiving a book there70 between, a base member, a frame member pivotally supported upon said base member, said lower pressure plate being supported upon said base member and said upper pressure plate being supported upon said frame member, pneumatic pressure means for effecting pivotal move75 ment of said frame member relative to said base mem3 the pressure plate 26 v/ill impart an even equally distributed pressure on the pressure member 6. Each of the pressure members 5 and 6 is formed from a block of insulating material and is provided in its operative face with a plurality of spaced parallel grooves 31 5 and between these grooves electrodes 32, 33 are embedded in the material of the block with their upper faces exposed and flush with the upper operative surface of the block. In grooves or channels in the opposite or inoperative face of the block forming the pressure member are 10 a pair of conductor bars 34, 35 which are connected with the electrodes 33 and 32 respectively by means of conductor pins 36. The conductor bars 34 and 35 are provided at one end with terminals 34α and 3sa respectively for connecting them to a suitable source of electric current. As will be understood from the drawing the conductor bar 34 is connected with one series of electrodes 33 and the other conductor bar 35 is connected with the other alternating series of electrodes 32. The pressure member 8, which is adapted to press against the back of the bound book, as will be clear from Figure 1, is provided with an inwardly curved or concave operative surface to ensure that pressure is distributed evenly over the outwardly curved or convex back of the book and this operative surface of the preessure member 8 is provided with a series of spaced electrodes 37 in a similar manner to the pressure members 5 and 6, except that in the case of the pressure member 8 the electrodes 37 pass round the upper and lower edges of said member and are connected directly with contact bars 33 and 39, the contact bar 38 being connected with one series of electrodes and the contact bar 39 being connected with another alternating series of electrodes, both contact bars being connected with a source of electric current. The pressure member S as v/ill be seen from Figures 1 and 2 is mounted on a pair of guide rods 40, 41 which pass through a cross member 42 fixed between the two supports 17, 17α and a compression spring 43 is arranged on said guide rods 40, 41 between the pressure member 8 and the cross-member 42 whereby the said pressure member S is urged towards the back of the book being pressed. In operation the upper or movable pressure member 6 is swung out of the operative position shown in Figure 1 by swinging the frame structure 12 upwards about its 43 pivot 16 with the hand lever 20 remaining in its inoperative position shown in the drawings. A bound book which is to have its cover applied is coated with adhesive at the areas where the cover is intended to adhere, usually to the back of the book and to the outer surface of the inner cover leaf, and the cover is then placed in position on the bound book. The book with the cover in position is then placed on the lower fixed pressure member 5 as shown at 7 in Figure 1 with the back of the book in contact with the resilient pressure member 8. The frame structure 12 with the upper pressure member 6 is then swung into the operative position shown in Figure 1. When in this position the hand lever 20 is moved in the direction of the arrow from its inoperative position shown in full lines into its operative position partly shown in chain dotted lines. The downward movement of the lever 29 first causes the cams 21 to rotate and engage the rear side of the pressure member 9 and force it forward against the action of springs 44 into contact with the front edges of the leaves of the book at 45 thus pressing the book firmly against the opposing pressure member 8 against the action of the spring 43. During the continued downward movement of the lever 20 a roller 46, mounted on the lever, engages under an abutment 47 and thus pulls the frame structure 12 and the upper pressure member 6 downwards thus causing the pressure member 6 to be pressed downwardly onto the upper side of the bock 7. The book 7 is thus subjected* to a degree of mechanical pressure between the pressure members 5 and 6. After passing the abutment ber, said pneumatic pressure means including a pressure cylinder connected with a source of pressure fluid supported upon said frame member and a plunger mounted within said cylinder connected to said upper plate for selectively effecting movement of said upper plate relative 5 to said lower plate to compress a book and casing therebetween, a first series of spaced electrodes and a second series of spaced electrodes mounted in alternate sequence upon the facing surfaces of said spaced pressure plates, and high frequency alternating current supply means connected to said electrodes for supplying a high frequency current thereto.
  2. 3
    Apparatus for applying a casing to a bound book 20 comprising, in combination, press means comprising spaced flat plates for clamping the sides of a casing to the sides of a bound book, means for selectively moving said flat plates substantially perpendicularly relative to each other, a pressure member for pressing the back of the casing against the bound book, a positioning member for urging the leaves of the book against the back of the casing, electrodes carried by said flat plates and said pressure member, switch means for connecting said electrodes to a source of high frequency alternating current, and operating means for sequentially moving said positioning member toward said pressure member and said movement of said plates toward each other. References Cited in the file of this patent UNITED STATES PATENTS 2,151,957 Davis_________________Mar. 28,1939 2,542,702 Prow__________________Feb. 20,1951 2,555,139 Knowles______________May 29,1951 2,579,488 Freeman______________Dec. 25,1951 2,587,034 Dobbs_________________Feb. 26,1952 2,631,642 Richardson et al.________Mar. 17,1953 2,640,208 De Florez______________June 2, 1953 2,649,877 Renn_________________Aug. 25, 1953 FOREIGN PATENTS 608,954 Great Britain___________Sept. 23, 1948
Independent claims2