Abstract: An air-dirt separator adapted to reduce entrained air and separate debris from fluid moving through the air-dirt separator is described in the present disclosure. The air-dirt separator includes a housing and coalescing baffles mounted in the housing.

Abstract: An expansion tank which comprises a tank having a predetermined volume capacity; an expandable elastomeric bladder in the tank, partitioning tank volume into a liquid-containing portion for holding liquid and a gas-containing portion for holding a gas under a pressure that defines a normal pressurized gas volume when the liquid-containing portion holds a predetermined liquid volume; and a proximity sensor mounted to the tank at the gas-containing portion thereof and adapted to emit an alarm signal when volume of the gas-containing portion is reduced.

Abstract: An expansion tank which comprises a tank having a predetermined volume capacity; a flexible diaphragm in the tank, partitioning tank volume into a liquid-containing portion for holding liquid and a gas-containing portion for holding a gas under a pressure that defines a normal pressurized gas volume when the liquid-containing portion holds a predetermined liquid volume; and a proximity sensor suspended in the gas-containing portion of the tank and adapted to energize an alarm signal when volume of the gas-containing portion is reduced a predetermined amount as indicated by proximity of the diaphragm.

Abstract: A multiple-ply article includes a lower ply and an upper ply with printed matter on each of the plies. The plies are adhered together with an adhesive so that they can be separated from each other without damage to either of the plies, and so that printed matter on the lower ply becomes visible when the upper ply is removed. The multiple-ply article may be attached to a container to serve as a label. A method for producing such a multiple-ply article includes the steps of applying printed matter to a web of stock material, applying adhesive to the web, manipulating the web to form multiple plies, releasably adhering the multiple plies together, and cutting the multiple plies to form the multiple-ply article. The method thus produces in a single process a multiple-ply article which may serve both as a primary label for a product and as a promotion or additional information carrier.

Abstract: Small-sized, folded, glued coupons for insertion into a food package are made on a continuous line starting with a roll of paper and finishing with a straight, aligned, moving row of finished coupons, disposed in shingled relation to facilitate arranging in a row in a tray for immediate packing in a container for shipment to a user, without manual handling prior to arranging in the tray. The line includes equipment for (1) receiving individual coupons from a rotary cutter in a straight-line alignment in a downstream direction, (2) maintaining that alignment and (3) delivering the coupons in that alignment to a conveyor in such a manner as to facilitate arrangement in the desired shingled relation. Cleanliness is maximized and pilferage is minimized.

Abstract: The present device is a folded, printed product of the type often used in advertising. The product lies flat when closed, but when open or unfolded, a section of the product forms a three-dimensional box. The box section has a tongue extending above it, providing a particularly prominent section for displaying important information.

Abstract: A booklet comprises a front page, a back page and a plurality of inner pages. An envelope is detachably connected to the outer longitudinal edge of the booklet's back page, and the envelope has dimensions which permit it to be folded along either the outside or the inside of the back page. The envelope may be folded inside the booklet without impairing the compactness of the booklet. No matter how the envelope is folded, there is easy access to all of the booklet pages and to the envelope. For functional reasons involving the aforesaid compactness and accessibility, the back page is indented relative to the other pages of the booklet and the front and back panels of the envelope are indented relative to the back page of the booklet. The envelope has a flap made out of material saved from the indentations.

Abstract: An airline ticket holder comprises a front cover and a back cover joined along a mutual inner edge or fold. A pocket is located between the two covers and is attached to the front cover. Located between the pocket and the back cover and attached to the covers adjacent the fold is a booklet comprising a plurality of pages each having advertising matter printed thereon.

Abstract: A combined key holder and booklet comprising front and back covers enclosing a plurality of booklet pages. The front cover and a pocket member peripherally attached to the front cover define a pocket into which a key may be inserted through a lateral slot in the front cover. The longitudinal and lateral dimensions of the components are controlled to provide specified relationships. A detachable envelope is optional as part of the booklet.

Abstract: A continuous web of paper has a longitudinally extending marginal part folded over onto an adjacent longitudinally extending second part of the web. The web is in tension, and the second web part has a transverse slit. During the folding step, the marginal part is folded out of the plane of the web thereby increasing the tension on the second web part. A ribbon of flexible material is disposed beneath, and conformed to the contours of, the second web part during the folding step, to absorb some of the tension on the second part so as to prevent transverse tearing from the transverse slit across the second part of the web.

Abstract: A booklet containing an integral pop-up is formed from a continuous web of paper in an in-line process on a single apparatus.

Abstract: A reply card arrangement comprises a reply card detachable from a plurality of folded pages. The reply card is composed of two sheet portions in superimposed relation and adhesively secured together along a side of each. A first sheet portion of the two ply reply card has discontinuous score lines thereon defining a detachable flap raisable from the first sheet portion to exposed to view a part of the inside surface of the second sheet of the two ply reply card. Confidential information may be entered on the exposed part which is then covered by the flap which may be secured to the second sheet portion with a wettable adhesive located along the margin of the flap.

Abstract: A composite strip is formed, during a folding step, from a continuous cover strip folded around a continuous, multi-ply inner strip. The cover strip has longitudinally spaced transverse slits therein and is tensioned during the folding step. A sharp, neat fold is obtained without transversely tearing the cover strip.

Abstract: An apparatus piles a continuous stream of booklets in a stack, with a succeeding booklet in the stream being piled atop a preceding booklet. When the stack attains a predetermined size, the stack is ejected from the apparatus without stopping delivery to the apparatus of the continuous stream of booklets which are accumulated in a temporary holding stack, during ejection of the other stack. The temporary holding stack is depleted at a rate faster than it formed, following the ejection of the other stack.