Патент USA US2406610код для вставки
Aug. 27, 1946. ' A, KELSALL ’ ~2,406,610 ENVELOPE OPENING‘ DEVICE Filed April 25, 1945 ZSheets-Sheet; 1 FIG. I l Hh? |W//////////////////¢/ ‘\ Inventor FEEDER/6K A. KELSALL v By. j --Aug. 27; 1946. ‘2,406,610 F. A. KELSALL ENVELOPE OPENI‘NG DEVICE Filed April 23', 1945 I 2 Sheets-sheaf 2 FIG. 4 x‘7 . . \ a F . 75 W4 s .WM . ' Invento'r' 9 ~ FEEDER/GK}. KELSALL _ H ' . ' v s ' E By ’ MM 3M2?‘ 2,406,610 Patented Aug. 27, 1946 ‘UNITED STATES ‘FATENT OFFICE 2,406,610 ENVELOPE OPENING DEVICE Frederick A. Kelsall, Boulder, Colo. Application April 23, 1945, Serial No. 589,869 3 Claims. (Cl. 3€l_—131) 1 2 " being secured to the front wall 2, as by screws I6, with a spacing means between the blade and said wall. Preferably, the spacing means has the form My invention relates to improvements in en velope opening devices, the primary object in view being to provide a device of simple, inexpensive of a spacing bar I? of the same type as said blade construction for shearing one edge of an envelope quickly and evenly ‘so that the contents may be quickly removed, and which functions to shear the edge off uniformly in predetermined degree, store the cuttings in hidden condition for subse-v Ill and which is secured in place by said screws I5. The shearing blade I4 may be provided with widened ends, as at I8, bearing against the bottom wall 4 to align the edge I5 with the bottom of the slot l I. quent disposal thereof, is self-sharpening, easy to operate, will not get out of order, and is 710 A vertically rocking, shearing blade, I9, similar ' to the blade I4, but having a right angled down adapted for prolonged use. ‘ turned end 2%, is pivoted to one end and rear side 'T0 the accomplishment of the above, and sub of said. blade I4 by a screw 2| passing through ordinate objects presently appearing, a preferred embodiment of my invention has been illustrated in the accompanying drawings, set forth in detail in the succeeding‘ description, and defined inthe claims appended hereto. 15. In said drawings: Figure l is a view in top plan of. my improved envelope opening‘ device, inlits- preferred embodie’ 20.' ment, . V Figure 3 is a view inlongitudinal section taken on the line 3-3 of Figure 1, Figure 4 is‘ a view in perspective with parts shown in section, Figure 5 is a view in end elevation partly in sec tion. Figure 6 is a view in transverse section showing . end wall 5 is provided with a circular outlet open ing 8 therein closed by a threaded disc-type clo sure 9 having a knurled edge Ill providing for a ' ?rm grip thereon. A longitudinal, central slot II is provided in the front wall 2 and end walls ' lapping relation to said shearing blade‘ Ill and provided with an upper edge extension '25 pro jecting out of the casing I through a top slot 26 in the wall 5, said extension being provided with a right angled edge ?ange Z‘I overlying the top wall 5 and forming a pressure member for rocking 30’ the shearing blade I 9 and the stop plate 23 down wardly. A coil spring 28 interposed between the top wall 5 and said flange 21 and countersunk at its ends in said top wall‘ and ?ange yieldingly - holds the flange 2‘! elevated and consequently the and which is provided with front, rear, bottom, ; top and end walls designated 2, 3, II, 5 and 6, re spectively. Preferably, the corners of the casing I are beveled, as at ‘I, to obviate sharp edges. One to coact with the shearing edge I5 of the blade I4 when the blade I9 is rocked downwardly against‘ the edge of the envelope I2 inserted between said blades. A relatively wider stop plate 23 extends along the back of the shearing blade I9 in over which is secured to the shearing blade I9, as by screws 2:3. At the end of_ the shearing blade I9 opposite the pivot’screw 2|, the stop plate 23 is Figure 2 is a view in front elevation, modification of the invention. Referring to the drawings by numerals, my im proved envelope opening device, as shown, com, prises an elongated, rectangular casing -I of sub stantially the length of the usual letter envelope said end 29 into the blade Ill, and whereby a low er shearing edge 22 on, said blade I9 is arranged shearing blade I9 and stop plate 23 in elevated normal position in which an edge of the envelope I2 may be inserted between said shearing blades I4 and I9. ' The casing I and closure 9 may be formed of 40 any light strong material, preferably a plastic. The shearing blades I4 and I9, together with the spacing bar I‘! and the stop plate 23, are prefera bly formed of metal. . The manner in which the described invention 6, said slot II opening into the casing I between the end walls 6 and being of the requisite width 45 is used and operated will be readily understood. With the casing l grasped. for instance. in the left to accommodate therein one edge of the usual let hand. the selected edge of the envelope I2 is in ter envelope. as shown in dotted lines at l2. Bev serted in. the slot I I against the stop plate 23 and eled guide ribs I3 are provided along the top and the shearing blade I9 is then rocked downwardly bottom. of said slot I I to facilitate entering the 50 by pressure exerted. for instance, by the thumb, edge of the envelope l2 in said slot. ~ A stationary, bar-like shearing blade III, of rec tangular cross section, extends along the bottom of the slot I I. inside the casing l . from end to end of the casing and with an upper ?at shearing edge I 5 level with the bottom of the slot I I, said blade on the flange 21. The shearing blade I9 is thus caused to cooperate with the shearing blade I4 to shear o? said edge of the envelope ‘I2, the cut tings falling between the shearing blade l4 and “ the stop plate 23 into the bottom of the casing. 2,406,610 3 The coil spring 28 opposes depression of the flange 2‘! and the described operation of the shearing blade I9 and stop plate 23 and, as shown in Fig ure 4, limits downward movement of these parts so that excessive operation of the shearing blade 4 blade, and a spring interposed between said top and said ?ange and thereby yieldingly retaining said pivoted blade in raised position. 2. In an envelope cutting device, an elongated substantially rectangular casing adapted to form [9 is prevented. As will be clear, the spring 23 a closed storage receptacle for envelope cuttings returns the operated parts to the described nor and embodying a front side and a top, said side mal condition. The stop plate ‘23, it will be seen, having a longitudinal slot therein for insertion provides a gauge for predetermining the width of one edge of an envelope therethrough into of the cutting which is sheared off the edge of the 10 said chamber, a shearing blade in said chamber envelope I2. As shown in Figure 6, a spacing bar ?xed to said side and having an upper shearing 29 similar to the shearing blade [9 may be inter edge extending along the bottom of said slot, a posed between said blade I9 and the stop plate 23, second shearing blade in said chamber pivoted and the stop plate 23 may be set back further at one end to one end of the ?xed blade for rock from the slot ! l to provide for a wider cutting be 15' ing movement from normal position into coopera ing sheared from the envelope l2. It may be tive relation to the ?xed blade to cut said edge stated at this point that the slot 26 is wider than of the envelope with a shearing action, an edge the extension 23 so as to provide for such setting extension on the other end of said pivoted blade back of the stop plate 23. Since the slot H ex extending through said top and provided with a tends from end to end ‘of the casing I, as pre 20 lateral ?ange forming a presser member for rock viously described, envelopes longer than the cas ing said pivoted blade, a spring interposed be ing i may be slid into said slot from the appro tween said top and said ?ange and thereby priate end of the casing l and the edge of the yieldingly retaining said pivoted blade in raised envelopes sheared off progressively. Accumu position, and a stop bar ?xed on said pivoted lated cuttings may be disposed of by unscrewing 25 blade to establish the position of said edge of the closure 9 and removing said cuttings through the envelope relative to said blades. the opening 8. . 3. In an envelope opening device, an elongated The foregoing will, it is believed, su?ice to substantially rectangular casing adapted to form impart a clear understanding of my invention ~ a closed storage receptacle for envelope cuttings without further explanation. '30 and embodying a front side and a top, said side Manifestly, the invention, as described, is sus having a longitudinal slot therein for insertion ceptible of modi?cation without departing from of one edge ofan envelope therethrough into the inventive concept, and right is herein re said chamber, a shearing blade in said chamber served to such modi?cations as fall within the ?xed to said side and having an upper shear scope of the appended claims. 35 ing edge extending along the bottom of said slot, What I claim is: a second shearing blade in said chamber pivoted 1. In an envelope opening device, an elongated at one end to one end of the ?xed blade for substantially rectangular casing adapted to form rocking movement from normal position into co a closed storage receptacle for envelope cuttings operative relation to the ?xed blade to out said and embodying a front side and a top, said side 40 edge of the envelope with a shearing action, an having a longitudinal slot therein for insertion of edge extension on the other end of said pivoted one edge of an envelope therethrough into said blade extending through said top and provided chamber, a shearing blade in said chamber ?xed with a lateral ?ange forming a presser member to said side and having an upper shearing edge for rocking said pivoted blade, a spring inter 45 extending along the bottom of said slot. a second posed between said top and said ?ange and there shearing blade in said chamber pivoted at one by yieldingly retaining said pivoted blade in end of the ?xed blade for rocking movement from raised position, a stop bar ?xed on said pivoted normal position into cooperative relation to the blade to establish the position of said edge of ?xed blade to out said edge of the envelope with - the envelope relative to said blades, and spacing 50 a shearing action, an edge extension on the means between said ?xed blade and said side of other end of said pivoted blade extending through the casing for setting said blades back from said said top and provided with a lateral flange form slot. . ing a presser member for rocking said pivoted FREDERICK A. KELSALL.